Answers

2015-10-02T19:11:44+08:00
If x = 0, then y = ?
0 + y = 3
y = 3
we have a sol:              (0, 3)
If y = 0, then x = ?
x + 0 = 3
x = 3
we have a sol:             (3, 0)
By the points, we have the x-coordinate and the y-coordinate that forms a line that can determine the other solutions that makes the equation true.



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