Question

Y varies directly with x if y=15 when x=-18 find y when x=1.6

Answer 1

The way I answered this question is by putting it in a equal equation. If y and x are directly related then you can solve it by doing the following:

y   15  =  y
x   18  =  1.6

15* 1.6 = 18*y

24 = 18y
18    18

1.333333333 = y
1.3 = y