tentukan PGL yg melalui (7,20) dan sejajar dengan garis 2x-5y=8

2x - 5y = 8
- 5y = - 2x + 8
y = 2/5 x - 8/5
m1 = 2/5
syarat sejajar = m1 = m2 = 2/5
y - y1 = m (x - X1)
y - 20 = 2/5 (x - 7)
y - 20 = 2/5 x - 14/5
y = 2/5 x - 14/5 + 20
------------------------------(×5)
5y = 2x - 14 + 100
5y - 2x = 86

2x-5y=8
y=(-2x+8)/-5
y=2/5x-8/5  =>>m=2/5

y-y1=m(x-x1)
y-20=2/5(x-7)
y=2/5x-14/5+20
y=2/5x+86/5
atau
2x-5y+86=0