Persamaan garis yg melalui titik (2,3) dan(5,9) adalah a. y=2x+1 b. y=2x-1 c. y=x+2 d. y=y-2 Pliss pake cara

X2-X1/Y2-Y1
5-3/9-3
2/6
1/3
y=x+2

(y - y1) / (y2 - y1) = (x - x1) / (x2 - x1)
(y - 3) / (9 - 3) = (x - 2) / (5 - 2)
(y - 3) / 6 = (x - 2) / 3
3 (y - 3) = 6 (x - 2)
3y - 9 = 6x - 12
3y - 6x = - 12 + 9
3y - 6x = - 3
y - 2x = - 1
y = 2x - 1 (B)