Question

Suppose y varies directly as x Write a direct variation

equation that relates x and y. Then solve.

if y=15 when x=2, find y when x=8

Answer 1

y=7.5x, y=60

Explanation:

you have to consider x as the input and y as output

when input x=2 the output y=15 so it grew by 7.5 so we can say that y= 2*7.5

in general the equation is y= 7.5*x

when x=8 we will have y=7.5*8=60