Jawabanmu

2014-09-11T08:29:51+07:00
3 x + 4 y == 12

ContourPlot[3 x + 4 y == 12, {x, 10, -2}, {y, 15/2, -3/2}]

y = 3-(3 x)/4

3 x+4 y-12 = 0
x = 4 n, y = -3 (n-1), n element Z

y = -3/4 (x-4)