skate2400
Which of the following is the equation of the axis of symmetry of the quadratic equation y = 2(x  4)^2 + 7?
x = 7
x = 4
x = 4
x = 7



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Mertsj
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Remember the axis goes through the vertex and is a vertical line so; x=4

studyopen101
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y=a(xh)^2+k
axis of symmetry is x=h
the axis of symmetry is 4

mridrik
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the equation for axis of symmetry is x = b/2a

mridrik
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in the standard form y = ax^2 + bx + c

mridrik
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yours is in vertex form

mridrik
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so it makes it easier

Hero
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I awarded study and mridrik medals for posting good general solutions.

studyopen101
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thanks