Question

The variables x=100 and y=2 varies directly. How do you write an equation that relates the variables and find x when y=-5?

Answer 1

Direct variation equation is `x=50 y and x=-250`

Explanation:

`x prop y or x = k*y or k = x/y or k =100/2 =50 :. x = 50*y`

Thus the direct variation equation is `x=50 y ; y = -5 :. x=50*(-5) =-250`[Ans]