Bagaimana mencari persamaan garis b ?

x = -2
y = 3
m1 = - x/y = 2/3

m2 = -1/m1
m2 = -1 × 3/2 = -3/2

x, y = 3, 0
y - y1 = m(x - x1)
y - 0 = -3/2(x - 3)
y = -3/2x + 9/2 (.2)
2y = -3x + 9
2y + 3x = 9