Question

The value of y varies directly with x, and y = 1 when x = 2.

Find y when x = 4.

Answer 1

The value of y varies directly with x

y=kx

Answer 2

y = 1 when x = 2

1=k2

Answer 3

1=k 2 (times, not square)
k= 1/2

Answer 4

Find y when x = 4

y=(1/2)x

y=(1/2) 4

y=2