How to find the Axis of Symmetry

The video tutorial explains the concept of the axis of symmetry, particularly in quadratic equations. It begins by defining axis and symmetry, then introduces the equation for the axis of symmetry as x equals negative b over 2a. The tutorial includes an example problem to demonstrate how to apply the equation and plot the axis of symmetry on a graph. The video emphasizes understanding the equation and visualizing the axis as a vertical line on the coordinate plane.

What does symmetry mean in the context of the axis of symmetry?

• Different on each side

• The same on both sides

• A line that is horizontal

• A line that is vertical

Which formula is used to find the axis of symmetry in a quadratic equation?

• x = -2a/b

• x = 2a/b

• x = -b/2a

• x = b/2a

Why is it important to be aware of signs when using the axis of symmetry formula?

• Because it can lead to incorrect calculations

• Because it changes the value of 'a'

• Because it alters the y-intercept

• Because it affects the direction of the parabola

In the equation -x^2 + 2x + 3, what is the value of 'a'?

• 2

• 1

• -1

• 0

What does the axis of symmetry represent on a graph?

• A horizontal line

• A diagonal line

• A curved line

• A vertical line