What is the equation of the axis of symmetry for $y=x^2-25$ ??

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Answer 1 · 2017-05-07T23:17:10

The function can be written as $y=(x+5)(x-5)$
(special products)

So the zeroes are $x=-5andx=+5$ and the axis is in the middle:

$x=0$

Note:
In general, when there is no $x$ coefficient, the axis of symmetry is always $x=0$ .

What is the equation of the axis of symmetry for y=x^2-25y=x^2-25??