tolongin dong plis makasih tentang gradien garis

Koordinat (x,y)
A = (-4,1)
B = (6,-3)
C = (4,5)

Gradien (m)
m = (x1 - x2) / (y1 - y2)

1. Gradien garis AB = (-4 - 6) / (1 + 3)
                            m = -10/4 = -5/2

2. Gradien garis BC = (6 - 4) / (-3 - 5)
                            m = 2/(-8) = -1/4

3. Gradien garis AC = (-4 - 4) / (1 - 5)
                             m = -8/-4  = 2