# How to find the axis of symmetry of a parabola

For a parabola with an equation of the form ax 2 + bx + c, the axis of symmetry can be calculated using the following formula: x = −b/2a. where a and b are the coefficients of x 2

## Axis of Symmetry & Vertex of a Parabola

There are two different formulas that you can use to find the axis of symmetry. One formula works when the parabola's equation is in vertex form and the other works when the parabola's

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## Axis of Symmetry

Axis of symmetry formula for a parabola is, x = -b/2a. Let us derive the equation of the axis of symmetry. The quadratic equation of a parabola is, y = ax 2 + bx + c (up/down parabola). The constant term 'c' does not affect the

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If your equation is in the standard form$$y = ax^2 + bx + c$$ , then the formula for the axis of symmetryis: $\red{ \boxed{ x = \frac {-b}{ 2a} }}$. Vertex Form. If your equation is invertex