Question

Write a direct variation equation that relates x to y. Then solve. Show both the equation and the solution. If y = 8 when x = 4, find y when x = 5

Answer 1

Is this exactly how the question is worded in your assignment?

Answer 2

Yea.

Answer 3

multiply it by two? or add four?

Answer 4

Yes, either will work but the question asks you to write a "direct variation" equation that relates x to y. Which means to multiply by 2. Can you write the equation?

Answer 5

4x*8 = 5x*y?? I'm not good with finding equations

Answer 6

That is way too complicated, what you want is something simpler in the form:
y = k*x, where k is a constant.

Answer 7

so y=2*x or 8=2*4?

Answer 8

Correct.

Answer 9

Now find y when x = 5?

Answer 10

10?

Answer 11

Correct.

Answer 12

Thanks!

Answer 13

np