Question

Y and x have a proportional relationship and y=9 when x=2 what is the value of y when x=3

Answer 1

If they are proportional, then y/x should always be the same.

So 9/2= 4.5

We need to find the y value at x=3 to make y/x equal 4.5

4.5 = y/3

y = 4.5*3 = 13.5