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-5y=-2x+8
kalikan -1
5y=2x-8
y=2/5x-8 ------------- ingat rumus y=mx+c------ m adalah gradien
m=2/5
y-y1=m(x-x1)
y-2=2/5(x-7)
y-2=2/5x-14/5
y=2/5x-14/5+2
kalikan 5
5y=2x-14+10
5y=2x-4
2x-5y-4=0