Question

Given that y varies directly with x, write the equation that relates x and y.

Answer 1

a)Given x=8, y=56.

`y=7x=7*8=56`

Hence, the equation is y=7x.

b) Given x=1/3, y=15

`y=45x=45*(1)/(3)=15`

Hence, the equation is y=45x.

c) x=4, y=18.

`y=4x+2=4*4+2=18`

Hence, the equation is y=4x+2.