Question

99 POINTS! Can someone please please help me? I beg you LATE WORK 2 questions!

y and x have a proportional relationship, and y = 5 when x = 4. What is the value of x when y = 8?



Enter your answer in the box.



The graph of a proportional relationship contains the point (20, 4).

What is the corresponding equation?

Enter your answer as a fraction in simplest form in the box.

y = ___ x

Answer 1

y and x have a proportional relationship, and y = 5 when x = 4. What is the value of x when y = 8?

4/5 = x/8

5x = 32
x = 32/5
x = 6.4

answer
x = 6.4 when y = 8

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The graph of a proportional relationship contains the point (20, 4).

What is the corresponding equation?

4/20 = 1/5

answer
y = 1/5 x

hope it helps

Answer 2

y = 5
x = 4

Multiply both variables by 8/5

y = 8
x = 32/5

Your answer is 32/5

Let k be a constant
y = kx
Plug (20, 4) into the equation
4 = 20k
Divide both sides by 20
k = 1/5

Your equation is
y = (1/5)x

Have an awesome day! :)