Tent. PGL melalui (7,2) tgk lrs dg 2x-5y=8 Syukron.

2x-5y=8
a=2
b=-5
m=-a/b =-2/-5=2/5 krena tegak lurus jadi -5/2
y-y1=m(x-x1)
y-2=-5/2(x-7)
y-2=-5/2x+17,5
y=-5/2x+17,5+2
y=-5/2x+19,5