y=x2+2x+1 -b -2
2a= 2= -1
= axis of symmetry is negative one.
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y-axis
y = 2x + 2 + 4x+ 2 = 6x + 4 This is NOT a symmetric function and so there is no axis of symmetry.
It is the axis of symmetry.
Reflection about the y-axis.
It is x = 0.