What is a direct variation equation going through (-4,4)? a. y=4x b. y=x c. y=-x d. y=-4x

Question

asked Feb 19, 2020 102k views

1 Answer

Aktivb · Answer 1 · 2020-02-26T00:01:24+0000

Answer:

c.
y=-x

Explanation:

We can find this by substituting in our ordered pair (-4,4) into each equation to see if we get the same value on each side

a.
$y=4x\\\\4=4(-4)\\\\4=-16$

A it is not the right equation

b.
$y=x\\\\4=-4$

B it is not the right equation

c.
$y=-x\\\\4=-(-4)\\\\4=4$

C is the right equation

d.
$y=-4x\\\\4=-4(-4)\\\\4=16$

Dis not the right equation