Question

X Y

-10 2
-15 3
-25 5

Determine whether y varies directly with x. If so, find the constant of variation and write the equation

Answer 1

x = -5y

Explanation:

x = ay

-10 = 2a

a = -5

x = ay

-15 = 3a

a = -5

x = ay

-25 = 5a

a = -5