Jawapan

2016-01-06T03:49:03+08:00
M = (y2 - y1) / (x2 - x1)
m = (3 - 2) / (4 - 2)
m = 1/2

y = mx + c
3 = 1/2 (4) + c
3 = 2 + c
c = 1

y = 1/2 x + 1
y = 1/2 (8) + 1
y = 4 + 1
y = 5