Y varies directly as x. Write the equation that relates x and y if y=16 when x=2

Question

One step equations

Answer 1

Hi Angela,

Y varies directly as x. Write the equation that relates x and y if y=16 when x=2

The formula for direct variation is y=kx, where k is the constant of variation. You substitute in the x and y values in order to find k, the constant.

y=kx

16=k(2) divide both sides by 2

8=k --> this is the constant of variation

Therefore, the equation is y=8x

Have a nice day!

Ms. S