Question

Persamaan garis yg melalui titik A (-2,-5) dan B(3,-7) adalah...
a. 2x - 5y = -29
b. 2x - 5y = -3
c. 2x + 5y = -3
d. 2x + 5y = -29

*pakai cara

Answer 1

Y - y1/y2 - y1 = x - x1/x2 - x1
y - (-5)/-7 - (-5) = x - (-2)/3 - (-2)
y + 5/-7 + 5 = x + 2/3 + 2
y + 5/-2 = x + 2/5
(dikalikan silang)
5(y + 5) = -2(x + 2)
5y + 25 = -2x - 4
5y + 2x = -4 - 25
2x + 5y = -29
jadi jawabannya d