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= -2/1
= - 2
m2 = -1/m1
= -1/-2
= 1/2
y-y₁ = m₂(x-x₁)
y-3 = 1/2 ( x -(-4)
y -3 = 1/2 ( x + 4)
y -3 = 1/2 x + 2
y = 1/2x + 2 + 3
y = 1/2x + 5 ------> sederhanakan x 2
2y = x + 10
atau
-x +2y = 10
atau
-x +2y -10 = 0