Answer
y=-20x
Work Step by Step
Since the general form of a direct variation is y=kx,. lets substitute the value of x and y into this equation:
-5=$\frac{1}{4}$k (Divide both sides by $\frac{1}{4}$)
-20=k
Now plug in this value of k into the standard form of a direct variation:
y=-20x
This is our equation the relates both x and y for this situation.
