# How do you find the axis of symmetry in vertex form?

## How do you find the axis of symmetry in vertex form?

The axis of symmetry always passes through the vertex of the parabola . The x -coordinate of the vertex is the equation of the axis of symmetry of the parabola. For a quadratic function in standard form, y=ax2+bx+c , the axis of symmetry is a vertical line x=−b2a .

## How do you find the vertex and axis of symmetry in vertex form?

The Vertex Form of a quadratic function is given by: f(x)=a(x−h)2+k , where (h,k) is the Vertex of the parabola. x=h is the axis of symmetry. Use completing the square method to convert f(x) into Vertex Form.

What is the vertex of a graph?

The vertex of a parabola is the point where the parabola crosses its axis of symmetry. If the coefficient of the x2 term is positive, the vertex will be the lowest point on the graph, the point at the bottom of the “ U ”-shape.

### What is axis of symmetry in shapes?

The axis of symmetry is an imaginary straight line that divides a shape into two identical parts, thereby creating one part as the mirror image of the other part. The straight line is called the line of symmetry/the mirror line. This line can be vertical, horizontal, or slanting.

### How do you calculate axis of symmetry?

Plug your numbers into the axis of symmetry formula. To calculate the axis of symmetry for a 2nd order polynomial in the form ax 2 + bx +c (a parabola), use the basic formula x = -b / 2a. In the example above, a = 2 b = 3, and c = -1. Insert these values into your formula, and you will get:

How do you find the line of symmetry?

Follow 4 steps to use an equation to calculate the line of symmetry for y = x 2 + 2x Identify a and b for y = 1x 2 + 2x. a = 1; b = 2 Plug into the equation x = -b/2a. Simplify. The line of symmetry is x = -1.

## What is the definition of axis of symmetry?

axis of symmetry. noun. Mathematics. a straight line for which every point on a given curve has corresponding to it another point such that the line connecting the two points is bisected by the given line. 08/08/2020