Write the equation in function form:
8x + 4y = 20

Answers

Answer 1
Write 8x+4y=20 in function form


Writing a an equation in function form is simply expressing y values in terms of x. In other words when you substitute a particular value for x, you get a particular value for y.

so

8x + 4y = 20

4y = 20 - 8x

y = (20-8x)/4 or y = (20-8x)/4 or y = f(x) = 2(10-4x)/4 = (10-4x)/2 = 5 - 2x = -2x+5

check your answer with a sample values say with a point that solves the equation or a point on the line.....see below....

(2,1)

8(2) + 4(1) = 20......16 + 4 = 20...check.......y=-2(2) + 5 = -4 +5 =1....x=2, y=1...checks....so f(x)=-2x+5

another quick check are the intercepts.....y (x=0)....or x (y=0)

8 (0) + 4 (5) = 20.....(0,5).......y=f(x) = -2 (0) + 5...x = 0..y=5 so again the function checks so

8x + 4y = 20.....is also written as the function y= f(x)= -2x + 5

Related Questions

how do we know that we Enlarged by 2?

Answers

Answer:

ggg

Step-by-step explanation:

I think you multiply everything by 2 but I’m not fully sure

What is the BEST word to describe the probability that the spinner will stop on 3 or 4? A) certain B) unlikely C) impossible D) very likely

The answer is C, Unlikely, I did the test and got 100, don't listen to the impossible ones :)

Answers

Answer - c) unlikely ....

Answer:d

Step-by-step explanation:

Madison wants to throw a party. Party Time is offering a special for $275 for 50 guests and Party Forever is offering a deal for $250 for 40 guests. Which company should Madison choose if she is looking for the better deal? Make sure you use mathematics to EXPLAIN and SUPPORT your answer.

IF ITS RIGHT ILL GIVE YOU BRAINLST

Answers

Party Time

275/50=5.50& per guest

250/40=6.25$ per guest

Madison should choose party time.

Answer:

Party Time

Step-by-step explanation:

A store bought a kitchen play set for $34.93 and sold it for $89.25. What was the markup percentage? Round your answer to the nearest tenth.

Answers

Answer:

155.5%

Step-by-step explanation:

Answer:

The markup percentage should be: 155.5%.

I dont know what answer is i need help

Answers

Answer:

1/1296

Step-by-step explanation:

Multiply the fractions as a decimal. Answer would be 0.00077160493.

Then, Count all of the places after the decimal point. Answer would be 10000000. So... 78125/10000000.

Simplify the fraction, to get 1/1296.

-kiniwih426

How is the product of 3 and –2 shown using integer tiles?
A
B
C
D

Answers

A is right

Hope I could help

Look at the attachment, and please answer my question, thanks!

Answers

Answer:

physician's not physicians'

Answer:

physician's

Step-by-step explanation:

" physicians' " doesn't make sense where it is in the sentence.

It's just physician's.

(Look at the image below.) Suppose D’E’F’ is a transformation of DEF. Which of the following results is true about triangle D’E’F’?
A.Triangle D’E’F’ is the result of a dilation and a rotation.
B.Triangle D’E’F’ is the result of a reflection and a dilation.
C.Triangle D’E’F’ is the result of a translation and a reflection.
D.Triangle D’E’F’ is the result of a rotation and a translation.

Answers

Answer:

I believe A to be the correct answer.

Answer:

b

Step-by-step explanation:

What is the first step when solving the equation 3 (3x - 5x) + 2 = -8?

Answers

Answer:

Distribute

Step-by-step explanation:

You will want to distribute 3 by 3x and -5x, Which will then make your equation

9x-15x+2=-8

You are using pemdas in this equation so there for you distribute first .
Example : 3(3x-5x)+2=-8
You will multiply
3 (3x-5x)
9x -15 x +2=-8
Then add and subtract with same variables
-6x = -6
Then you divide by -6
X=1




Max makes bread that calls for 7/8 cup of raisins per loaf. He has 5 1/4 cups of raisins. How many loaves of bread can he make?

The answer is 6 1/2 loaves. True or False?

Answers

Answer:

False.

Step-by-step explanation:

The answer is NOT 6 1/2 loaves it is 6 loaves.

Knowing that there Max has 5 1/4 cups of raisins and each loaf requires 7/8 cup of raisins, we would need to divide.

Let's turn the 5 1/4 into an improper fraction so when we divide the two fractions, it would be easier!

To turn 5 1/4 into an improper fraction we need to...

5 x 4 = 20

20 + 1

21/4

Now we divided 21/4 by 7/8.

When dividing fractions remember the rule: KEEP CHANGE FLIP!

We keep the first fraction...which is 21/4 in this case

Change the sign from division to multiplication

21/4 x 7/8

And flip 7/8 so it becomes 8/7

21/4 x 8/7

= 168/28

  = 6 loaves

So, the answer is not 6 1/2 loaves (false!)

Answer:

False

Step-by-step explanation:

Given :

[tex]\frac{7}{8}[/tex] Cup of Raisin per loaf

Have [tex]5\frac{1}{4}[/tex]  Cup of Raisin  

Calculation steps:

[tex]\frac{21}{4}[/tex]  ÷ [tex]\frac{7}{8}[/tex]  

=

[tex]\frac{21}{4}[/tex]   ×  [tex]\frac{8}{7}[/tex]

=  

[tex]\frac{21 x 8}{4 x 7}[/tex]

=  

[tex]\frac{168}{28}[/tex]

=  

[tex]\frac{168 / 28}{28/28}[/tex]

= [tex]6[/tex]

Further explanation

For the problem:

21 /4 ÷7/ 8  = ?

Division of fractions is equivalent to multiplication by the reciprocal of the second fraction:

21 /4÷7 /8 =21/ 4 ×8/ 7

Once rearranged, multiply all of the numerators by each other. Do the same with the denominators and form a new fraction with these values:

[tex]\frac{21x8}{4x7} =\frac{168}{28}[/tex]

The Greatest Common Factor (GCF) of 168 and 28 is 28. The result can be simplified by dividing both the numerator and denominator by 28.[tex]\frac{168}{28}=\frac{168/28}{28/28} =6[/tex]

Therefore the result is: 6  

A student found the product of 4 × 10^2 and 6 × 10^8 to be 2.4 × 10^10. What is the error? What is the correct product? Complete the explanation.

Answers

Answer: The answer is 2.4 x 10 to the power of 11 so the power is wrong

Answer:

Answer: The answer is 2.4 x 10 to the power of 11 so the power is wrong

Step-by-step explanation:

What is the area of this figure? IXL assignment

Answers

I solve the problem. I think this is right I got the answer of 128

Answer:

The answer should be 128? Let me know if i'm wrong.

i don't know how to find this answer

Answers

Answer:

9

Step-by-step explanation:

First add all the fractions so I will equal 6 [tex]\frac{3}{4}[/tex]

steps : make it so that all fractions have the same denominator so we will be adding 10/4 + 8/4 + 2/4+ 7/4 which is equal to 27/4 and if you simplify that you get 6 [tex]\frac{3}{4}[/tex]

Then divide by 3/4 which is 9

so your answer is 9

pld mark brainliest ! :D

Answer:

it's 9

Step-by-step explanation:

Kelsey babysits and earns a lat rate of $10 plus $1.50 per hour. How many hours did she babysit if she earned $16? (Write and solve an equation to solvethis problem.)

Answers

Answer:

She babysitted for 4 hours.

Step-by-step explanation:

1.50x + 10 = 16

1.50x = 6

x = 4

Hope this helps!

4 because you already have 10 then 1.50(4)=6 you add the two then voilà

Write the equation in function form:
3y - 12x = 0

Answers

Answer: 4x

Step-by-step explanation: Move all terms that don't contain y to the right side and solve. y = 4x

Y = 4x

Kianna said so

Estou viajando de São Paulo a Porto Alegre, cujo percurso total tem 1600 km, aproximadamente. Se já percorri 80% do percurso, quanto ainda falta (em quilômetros e porcentagem)?


Apresente os cálculos.

Answers

Answer:

Step-by-step explanation:

Dudley and Bob monitored the distance their pet turtle could walk in a certain amount of time. The table shows their results. The table of values represents a proportional relationship. time (minutes) 5 Distance (inches) 14.5
14 40.6
19 55.1
25 72.5
b.) Write an equation for the distance traveled by the turtle based on the number of minutes. c.) Identify the constant of proportionality in part (b). What does it mean in this context? d.) Use your equation in part (b) to write an equation for the time it would take for the turtle to travel a given distance. e.) Identify the constant of proportionality in part (d). What does it mean in this context?

Answers

Answer: hope it helps!

Step-by-step explanation:

Kylie has $70 to spend on clothes. She wants to buy a pair of jeans for $30 and spend the rest on t-shirts. Each t-shirt costs $8. Which inequality represents the number of t-shirts she can purchase?

x ≥ 5
x ≤ 5
x ≤ 11
x ≥ 11

Answers

X > 5 I think I’m not entirely sure but I think this is right
X > 5 is the answer to this

Find two fractions that are equivalent to 1/9=2/18

Answers

Answer:

4/36 and 8/72

Step-by-step explanation:

4/39 and 8/72. Hope this help

what is 8,397diveded by 27

Answers

Answer:

311

Step-by-step explanation:

8397 is the dividend, you will put this inside the division.

27 is the divisor, meaning this will be put on the outside.

Answer:

311

Step-by-step explanation:

8,397 is in not out

Ronnie, Mack, Kim, and Ada together stacked a total of 40 pizzas in a pan. Ronnie stacked 0.25 of the pizzas, Mack stacked 9 of the 40 pizzas, Kim stacked 35% of the pizzas, and Ada stacked the remaining pizzas. Who stacked the most pizzas?

Ronnie
Mack
Kim
Ada

Answers

Ronnie stacked the most pizzas

Sarah babysits her neighbor's son to make money. Her earnings can be represented by the equation
M = 9h
where M is the money she earns and h is the hours she babysits.

Samara babysits her cousin to make money. Her earnings can be represented by the graph.

Answers

Answer:

27

Step-by-step explanation:

Due to the fact that M=9h you must do M=9(3).

M stands for the amount of money that Sarah will receive for babysitting. H stands for the amount of hours Sarah is babysitting. $9 is the amount of money Sarah makes per hour.

You get the number 3 by seeing where the blue dot is and scrolling down.

Therefore, M=9(3)

The answer is 27

Fred ate 2 1 2 _ cakes, while Benny ate 1 2 11 __ cakes. In total, how much cake did these two eat?

Answers

Answer:

the whole cake

Step-by-step explanation:

hope this helped.

have a nice day

I need help its about ratios

Answers

Answer:

4

Step-by-step explanation:

So we are multiplying 2 by 4 to get 8 large batches of peanuts, so we need to do the same sunflower seeds because the "ratio is the same"

Answer:

4

Step-by-step explanation:

The ratio for a small batch

for peanuts to sunflowers seeds is

2:1

and since a large

has 8 cups of peanuts it can be represented as

8:x

we are solving for x

to get from 2 to 8 we multiplied by 4

so find the x value we multiply 1 by 4

which we get 4 cups of sunflowers eeds

with the new ratio being 8:4

11. Niamh spent of her pocket money and had €10.50 left. How much pocket money did she have at first?​

Answers

We need more information to figure out the answer. If you don’t add that then we can’t help you.

I’m assuming you meant that she spent 1/4 and had 10.50 left.. I saw a question like that.. if that’s what happened then get 1/4 of 10.50 and then add it to 10.50.. it would be about 13.13.. sorry if that wasn’t the question though :)

Which of the following describes how to write the decimal number forty-nine hundredths?

0.409
0.940
0.49
0.94

Answers

Answer:

C 0.49

Step-by-step explanation:

4 shirts for $14. How many shirts can you purchase for $30?




Plz show your work

Answers

Answer:

2 shirts

Step-by-step explain

14 times 2 is 28 and you cant go over the price so yes 2

Well the person above must have read the question wrong because the answer would actually be 8 because if you can buy 4 shirts for 14 dollars then if you doubled 14 it would just be under 30 with 28 dollars and yes you can’t go over so the most you could buy is 8

I need answers very quick my brain is smol

Answers

Exact form: x=-10/3
Mixed number form: x=3 1/3

Which best describes the error in solving the inequality?



STEP 2:Correct the error.

Answers

Answer: nah

Step-by-step explanation: nah

Hello!!

Answer:

Whenever you are solving inequalities, if you divide then that means to FLIP the sign!

Step-by-step explanation:

Step 1: Divide both sides by -3.

−3m                9  

−3        ≥         -3

m≤−3

Answer:

m≤−3

i need help with this please

Answers

Answer: A. -5/4

Step-by-step explanation:

yes like the person said above me -5/4
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