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y - 4 = 5/2(x - (-1))
y - 4 = 5/2(x + 1)
2y - 8 = 5x + 5
2y - 5x - 13 = 0
2) ...3x + 2y - 6 = 0 ---> m = - 3/2
syarat sejajar m1 = m2 = - 3/2
y - b = m(x - a)
y -(-2) = - 3/2(x - 4)
y + 2 = - 3/2(x - 4)
2y + 4 = - 3x + 12
3x + 2y - 8 = 0