Jawapan

2016-09-27T16:05:58+08:00
A) kecerunan QR = 0
y = mx + c
(8,7) ; 7 = 0(8) + c
c = 7
y = 0x + 7
• y = 7

b) kecerunan PQ = kecerunan SR = 2
2y = kx - 18
y = k/2 x - 9
k/2 = 2
k = 2x2 = 4

c) 2y = 4x - 18
y = 2x - 9
2x -9 = 0
2x = 9
x = 9/2
not sure if the answers are correct. just wanted to help hehe