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04-04-2016
Mathematics

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what is the axis of symmetry for y=-x^2+2x+1

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Panoyin Panoyin

04-04-2016

y = -x² + 2x + 1

[tex]x = \frac{-b}{2a}[/tex]
[tex]x = \frac{-2}{2(-1)}[/tex]
[tex]x = \frac{-2}{-2}[/tex]
[tex]x = 1[/tex]

y = -x² + 2x + 1
y = -(1)² + 2(1) + 1
y = -1 + 2 + 1
y = 1 + 1
y = 2
(x, y) = (1, 2)

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