Question

HRLP )_)

For the equation -4y = 8x, what is the constant of variation?

A) -4
B) -2
C) 1
D) 2

Answer 1

It helps when y isn't negative. Can you multiply everything by -1? That way, you'll only be changing the signs

Answer 2

The second step is then to make 4y into y. Divide everything by 4. What is your result?

Answer 3

uh i don't know

Answer 4

Ok.
Changing the signs from the original is reverting - into + and + into -.
-1(-4y = 8x)
4y = -8x
Do you understand this part?

Answer 5

sure, go on

Answer 6

Then to make 4y into y, we divide the equation by 4.
\[\frac{ 4y = -8x }{ 4 }\]
y = -2x

Answer 7

For every x, you would have to times that by -2 for it to equal y. Which of the answers is true now that all has been broken down?

Answer 8

B, right ?

Answer 9

Yup! Don't forget to close the question.

Answer 10

thx !