Question

Given the equation y=kx where y=1.2 and x=1.5, what is the value of k?

Answer 1

The value of k is 0.8

Explanation:

we have

`y=kx`

This linear equation represent a direct variation

we have

y=1.2, x=1.5

substitute in the equation

`1.2=1.5k`

solve for k

divided by 1.5 both sides

`k=1.2/1.5=0.8`

The linear equation is

`y=0.8x`