6x-3y= 6(-3)
2x-y=-6
2x-y+6=0
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6x-3y= 6(-3)
2x-y=-6
2x-y+6=0
x2,y2 = 0,6
y-y1 / y2-y1 = x-x1 / x2-x1
y-0 / 6-0 = x-(-3) / 0-(-3)
y / 6 = x+3 / 3
3y = 6(x+3)
3y = 6x + 18
-------------------- : 3
y = 2x + 6
2x + 6 - y = 0
2x - y + 6 = 0