Question

The value of y varies directly with x2, and y = 64 when x = 4.

What is the value of y when x = 6?

Answer 1

96 is the value of Y

x = 6/4 = 1.5

y = 64 x 1.5 = 95

Check (96/64 = 6/4)

Answer 2

Y=96
This is because
When y=64 x=4
64 divided by 4 is 16.
Therefore X times 16=y

X =6
X times 16
=96
Y=96
Hope i helped ! :)