x = -2, -4y = -2- 18 , -4y = -20, so y = 5
x = -1, -4y = -1 - 18 , -4y = -19, so y = 4.75
x = 0, -4y = -18, so y = 4.5
x = 1, -4y = 1- 18 , -4y = -17, so y = 4.25
x = -2, -4y = 2- 18 , -4y = -16, so y = 4
you can use three of above points to graph your equation
