Understanding Quadratic Functions

What is a parabola in the context of a quadratic function?

• A straight line that intersects the quadratic function

• A U-shaped curve that represents the graph of a quadratic function

• A point where the graph of the quadratic function crosses the x-axis

• A line that divides the graph into two symmetrical halves

What is the vertex of a quadratic function?

• The highest or lowest point on the graph of the quadratic function

• The point where the graph crosses the y-axis

• The point where the graph crosses the x-axis

• The line that divides the graph into two symmetrical halves

What is the y-intercept of a quadratic function?

• The point where the graph crosses the x-axis

• The point where the graph crosses the y-axis

• The highest point on the graph

• The lowest point on the graph

What is the maximum of a quadratic function?

• The highest point on the graph of the quadratic function

• The lowest point on the graph of the quadratic function

• The point where the graph crosses the y-axis

• The point where the graph crosses the x-axis

What is the minimum of a quadratic function?

• The highest point on the graph of the quadratic function

• The lowest point on the graph of the quadratic function

• The point where the graph crosses the y-axis

• The point where the graph crosses the x-axis

What are the zeros of a quadratic function?

• The points where the graph crosses the y-axis

• The points where the graph crosses the x-axis

• The highest point on the graph

• The lowest point on the graph

What is the axis of symmetry in a quadratic function?

• A line that divides the graph into two symmetrical halves

• The point where the graph crosses the y-axis

• The highest point on the graph

• The lowest point on the graph

The graph of a quadratic function is called a ​ (a)   The ​ (b)   is the highest or lowest point of a parabola. The ​ (c)   refers to the line that would cut a parabola in half.

• parabola.
• vertex
• axis of symmetry

What's the vertex of this parabola?

• (0, 3)

• (-1, 0)

• (3, 0)

• (1, 4)

What is the vertex?

• (-3, 0)

• (3, 0)

• (0, 18)

• (18, 0)

Tags

CCSS.8.F.A.1

CCSS.8.F.B.4

CCSS.8.F.B.5