Question

Suppose y varies directly with x. Write a direct variation equation that relates x and y. Then find the value of y when x=12

Y=7 when x=3

Answer 1

So x= 3, y= 7

3/7 = 12/21

Which number times 3 is equal 12
3(4) = 12
So 7(4) = 28

X= 12 , y= 28