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5x + 2y = 50
a = 5
b = 2
c = 50
m₁ = -a/b
= -5/2
m₁ × m₂ = -1
-5/2 × m₂ = -1
m₂ = 2/5
y - y₁ = m(x - x₁)
y - (-3) = 2/5(x - (-2))
y + 3 = 2/5(x + 2)
y + 3 = 2/5x + 4/5
5y + 15 = 2x + 4
-2x + 5y = 4 - 15
-2x + 5y = -11
2x - 5y = 11
Jadi jawabannya adalah yang A. 2x - 5y = 11