Question

Y varies directly as the square of x. When x = 5, y = 100. Find y when x = 6.

y = 105

y = 120

y = 144

y = 150

Answer 1

Let be x=5, so y=100= 5² *4=5²*2²=100
so if x=6, so y=6²*2²=36*4=144
the answer is y = 144