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Gradien=-a/b=-2/-5=2/5
Persamaannya
Y-Y1=M(X-X1). (X1,Y1),(7,2)
Y-2=2/5(X-7)
Y-2=2/5x-14/5
Y=2/5X-14/5+2
Y=2/5X-4/5
Y=2/5X-4/5 DIBAGI 5
5y=2x-4
-2x+5y=-4
2x+5y+4=0