3
108
that means the value of x is same as the value of y
Insufficient information. What is x when y = 12?
X = 11.5
x=-1.5
3
18
108
x = 9/2 or x = -2 Solved by using the quadratic equation formula.
If y(x) = 1/3x, y(-18) = 1/[3(-18)] = -1/54.
y varies directly as x y=kx, where k is a constant y=18 when x=3 18=3k k=6 y=6x
y = 6
15 (x = 135)
x = 14
13 ? 15
y = 10. easy!