Question

If the value of "y" Varies directly with "x" and y = -8 when x = 20, find "y" if x = -4.

Enter the numbers that belongs in the fraction. (Reduce to simplest form.

y= ?/?​

Answer 1

Explanation:

When y varies directly with x

y=kx x=20 y=-8

k=y/x

k=-8/20

k=-0.4

now when x=-4 find y

y=kx

y=-0.4*-4

y=1.6