M=1/4 titik (-2,-5)

Bab Persamaan Garis
Matematika SMP Kelas VIII

y - y1 = m (x - x1) 
y - (-5) = (1/4) . (x - (-2))
4 (y + 5) = x + 2
4y + 20 = x + 2
x - 4y = 20 - 2
x - 4y = 18