Tentukan gradien garis yang melalui 2 titik dibawah ini : A. Titik a (0,0) Titik b (3,6) B. Titik a (-2,3) Titik b (4,-6) C. Titik a (4,-1) Titik b (-2,3) D. Ti

a) (y - 0) / (6 - 0) = (x - 0) / (3 - 0)
y / 6 = x /3
3y = 6x
y = 2x
m = 2

b) (y - 3) / (-6 - 3) = (x + 2) / (4 + 2)
(y - 3) / (-9) = (x + 2) / 6
6 (y - 3) = (-9)(x + 2)
6y - 18 = - 9x - 18
6y = - 9x - 18 + 18
6y = - 9x
y = - 9/6 x
y = - 3/2 x
m = - 3/2

c) (y + 1) / (3 + 1) = (x - 4) / (-2 - 4)
(y + 1) / 4 = (x - 4) / (-6)
(-6) (y + 1) = 4(x - 4)
- 6y - 6 = 4x - 16
- 6y = 4x - 16 + 6
- 6y = 4x - 10
y = - 4/6 x + 10/6
y = - ⅔ x + 5/3
m = - ⅔

d) (y - 5) / (-5 - 5) = (x - 1) / (6 - 1)
(y - 5) / (-10) = (x - 1) / 5
5(y - 5) = - 10 (x - 1)
5y - 25 = - 10x + 10
5y = - 10x + 25 + 10
5y = - 10x + 35
y = - 2x + 7
m = - 2