Exploring the Axis of Symmetry and Vertex in Quadratics

What is the vertex of a parabola?

• The intersection of two lines

• The point where the graph crosses the x-axis

• The highest or lowest point on the graph

• The point where the graph crosses the y-axis

If a parabola has points at x = -1 and x = 2, what is the x-coordinate of the vertex?

• 2.5

• -1.5

• 0.5

• 1.5

Tags

CCSS.HSF-IF.C.7A

What does the axis of symmetry represent in the context of a parabola?

• A vertical line that divides the graph into two equal parts

• The peak point of the parabola

• The lowest point of the parabola

• A horizontal line that divides the graph into two equal parts

How do you find the y-coordinate of the vertex from the graph?

• Trace horizontally from the vertex to the y-axis

• Trace vertically from the vertex to the x-axis

• Calculate the average of the y-values

• Use the quadratic formula

What is the axis of symmetry for a vertex at x = -2?

• x = -2

• x = 2

• y = -2

• y = 2