Jawapan

Jawapan Paling Bijak!
2015-10-11T18:52:23+08:00
1) cari kecerunan bagi fungsi

m = (y1 - y2) / (x1 - x2)
m = (-5 -3) / (-2 -2)
m = -8 / -4
m = 2

maka, y = 2x +c

2) cari nilai c, iaitu pintasan-y

y= 2x +c
1 = 2(1) +c
1 = 2 +c
c = 1 -2
c = -1

maka, fungsi itu ialah y = 2x -1
2 4 2