Respostas

2014-07-10T15:26:18-03:00
2x - y + 3 = 0 
-y = -2x - 3
y = 2x + 3

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KX = +4y - 7 = 0
-4y = -kx - 7
4y = kx + 7
y = kx/4 + 7/4
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2x = kx/4
2 = k/4
k = 8
1 5 1