Question

The value of y varies directly with x2, and y = 36 when x = 3.
What is the value of y when x = 5?
my guess is 60

Answer 1

y = 36, x = 3
y = ?  , y = 5

36 / 3 = 12
36 (y) / 3 (x) = 12

5 (x) * 12 = 60 (y)

Your answer is Y = 60.