# Axis of Symmetry Calculator

> Find the vertical line of symmetry and vertex coordinates for any quadratic equation in standard or vertex form step-by-step.

**URL:** https://www.calculatoranswers.com/axis-of-symmetry-calculator
**Category:** Education

## Quick Answer

Find the axis of symmetry and vertex for a parabola. Enter the coefficients of standard or vertex form to see the equation and an ASCII graph.

## Definition

An axis of symmetry calculator computes the vertical line dividing a quadratic parabola into symmetric halves. For standard form ax² + bx + c, it solves x = -b/(2a). For vertex form a(x - h)² + k, it extracts x = h. It also computes the vertex coordinates and plots an ASCII curve showing the opening direction.

## How to Use

1. **Select equation mode** — Choose standard form (ax² + bx + c) or vertex form (a(x - h)² + k).
2. **Enter parameters** — Type the coefficient values (a, b, c) or (a, h, k) into the input fields.
3. **Review parabola properties** — Read the axis equation, vertex coordinates, opening direction, and view the ASCII curve.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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