Tentukan garis jika di ketahui titik A (-2,5) B(3,-4)

y = -4 - 5 = -9
___________ m = -9/5
x = 3 - (-2) = 5

y = mx + c
-4 = -9/5 (3) + c
-4 + 27/5 = c
47/5 = c

y = -9/5x + 47/5

disederhnakan :
y = 9x + 49 (dikalikan 5)