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soal nomer 2
m = -(-4) / 3
= 4/3
m2 = -1 : 4/3
= -1 x 3/4
= -3/4
y - y1 = m2 ( x-x1)
y - 5 = -3/4 ( x - 2)
y - 5 = -3/4x + 3/2 --> sederhanakan x 4
4y - 20 = -3x + 6
4y = -3x + 6 + 20
4y = -3x + 26
atau
3x + 4y = 26
atau
3x + 4y -26 = 0