3.
y=3x + 1 (a)
y= 3x - 1 (b)
-y= -3x + 1 (c)
(a) and (b)
y= 3x + 1
y= 3x - 1
y=y
3x+1 = 3x - 1
3x -3x = -1 - 1
0 = -2
Since 0 is not equal to -2
There are NO solutions
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