Question

suppose y varies directly with x. write a direct variation equation that relates x and y.
y=-10 when x=2
A) y=-5x
B) y= -1/5x
C) y=5x
D) 1/5x

Answer 1

In order to do this, you need the answer to be in y=, so D is out automatically. Now, you see that y has to equal -10, so go through A, B, and C and plug in 2 for x and see which one comes out to -10

Answer 2

is it a?

Answer 3

Yes, good work!