HRLP )_)

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

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

Question

HRLP )_)

For the equation -4y = 8x, what is the constant of variation?

A) -4
B) -2
C) 1
D) 2

kaylieanime · Answer

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

kaylieanime · Answer

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

anonymous · Answer

uh i don't know

kaylieanime · Answer

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

anonymous · Answer

sure, go on

kaylieanime · Answer

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

kaylieanime · Answer

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?

anonymous · Answer

B, right ?

kaylieanime · Answer

Yup! Don't forget to close the question.

anonymous · Answer

thx !