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4x +10 = 5y
5y = 4x +10
y = 4/5x +10/5
y = 4/5x +2
Maka, m₁ = 4/5
m₁ . m₂ = -1
4/5 . m₂ = -1
m₂ = -1 per 4/5
m₂ = -5/4
y -y₁ = m(x -x₁)
y -(-3) = -5/4(x -2)
y +3 = -5/4x +10/4 dikali 4 untuk menghilangkan penyebut, sehingga
4y +12 = -5x +10
4y = -5x +10 -12
4y = -5x -2
5x +4y +2 = 0
Itu jawabannya.