If a line falls on the points (11, 13) and (4, 12), what is its slope? Enter your answer as a fraction in lowest terms. Use a sl
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The axis of symmetry of a parabola in the form
is a vertical line
where k is the x coordinate of the vertex of the parabola.
The x coordinate of the vertex of the parabola is given by
which in your case is
So, the axis of symmetry is the line x=12.