Persamaan garis yang melalui titik (-5,2) dan sejajar garis 2x - 5y + 1 = 0 adalah ...
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-5y = -2x -1
y = -2x/-5 -1
m = -2/-5 = 2/5
y - 2 = 2/5 ( x + 5)
5y- 10 = 2x + 10
5y -2x = 10 + 10
5y - 2x = 20
5y -2x -20 = 0
semoga benar
pers. garis: y - 2 = 2/5 ( x + 5)
y - 2 = 2/5x + 2
y = 2/5x + 4
atau
2x - 5y + 20 = 0