Question

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

Find y when x = 4.

A. 2


B. 4


C. −2


D. 8

Answer 1

A. 2

Explanation:

y=kx

1=2k

`k=(1)/(2)\\y=(1)/(2)x\\when~x=4\\y=(1)/(2)*4=2`