Persamaan garis yang melalui titik (1,-2) dan (3,0) adalah ...
[tex] \frac{y - y1}{y2 - y1} = \frac{x - x1}{x2 - x1} [/tex]
[tex] \frac{y - - 2}{0 - - 2} = \frac{x - 1}{3 - 1} [/tex]
[tex] \frac{y + 2}{2} = \frac{x - 1}{2} [/tex]
2 (y + 2) = 2 (x - 1)
2y + 4 = 2x - 2
2y = 2x - 2 - 4
2y = 2x - 6
2x - 2y = 6
x - y = 3 (B)
[answer.2.content]
