SOLUTION: The variable y varies directly as the square of x, and y=2 when x=2. Write an equation that relates x and y. Find y when x=1.5.

Algebra ->  College  -> Linear Algebra -> SOLUTION: The variable y varies directly as the square of x, and y=2 when x=2. Write an equation that relates x and y. Find y when x=1.5.      Log On

Hi, 

The variable y varies directly as the square of x

y = kx^2

2 = k*4

(1/2) = k

y = (1/2)x^2



Find y when x=1.5