It is known that the straight line passes through P1 (x1,5), P2 (4, Y2), P3 (- 1, - 3), and the slope of the straight line is - 3

It is known that the straight line passes through P1 (x1,5), P2 (4, Y2), P3 (- 1, - 3), and the slope of the straight line is - 3

1. Let the linear equation y = KX + B 2. Given the slope k = - 3, then take x = - 1, y = - 3 into y = - 3x + B to get b = - 6 3. The linear equation y = - 3x-6 takes y = 5 into X1 = - 11 / 3, x = 4 into Y1 = - 18