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2x -8 = 5y
5y = 2x -8
y = 2/5x -8/5
maka, m = 2/5
y -y₁ = m(x -x₁)
y -2 = 2/5(x -7)
y-2 = 2/5x -14/5 dikali 5 untuk menghilangkan penyebut, sehingga
5y -10 = 2x -14
5y = 2x -14 +10
5y = 2x -4
Jadi, persmaannya adalah 5y = 2x -4.
= -2/-5
=2/5
y-y1= m(x-x1)
y- 2 = 2/5(x-7)
y-2= 2/5x - 14/5
y= 2/5x - 14/5 + 10/5
y= 2/5x - 4/5
5y-2x+ 4 = 0