Question

Tolong dong, besok dah dikumpul nih..

Answer 1

14) m = (y2-y1) / (x2-x1)
= (-5-3) / (-2-4)
= -8 / -6
= 8/6
m1 = m2 = 8/6
y = m(x - x1) + y1
y = 8/6 (x + 2) + 1
y = 8/6 x + 8/3 + 1 --> ×3
3y = 4x + 8 + 3
3y - 4x = 11 (D)

15) 2y + 3x = 6
x = 0 --> 2y = 6 --> y = 3
y = 0 --> 3x = 6 --> x = 2
jadi (0,3) dan (2,0) (B)

16) m = (y2 - y1) / (x2 - x1)
= (2 + 4) / (-1 - 3)
= 6 / -4
= - 3/2
m1 . m2 = -1
-3/2 . m2 = -1
m2 = -1 / -3/2
m2 = ⅔
y = m(x - x1) + y1
y = ⅔ (x + 4) - 3
y = ⅔x + 8/3 - 3 ---> ×3
3y = 2x + 8 - 9
3y - 2x = -1 (D)