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B( -2, 3)
.
m = (y2-y1)/(x2-x1)
- 7/3 = [3 -(-4)]/ [ -2-a]
- 7/3 = 7/(-2-a)
-7(-2-a) = 7(3)
14+7a = 21
7a = 21-14= 7
a = 7/7 = 1
m =
=
=
= ....bagi dengan 7
=
a + 2 = 3
a = 3 - 2
a = 1