Review: Key Features of Quadratic Functions

Find the axis of symmetry

• x = 2

• x = -2

• x = 0

• x = 4

Which point is the vertex?

• (-8, 0)

• (-5, -9)

• (-2, 0)

• (-9, -5)

What is the increasing interval of the function?

What is the minimum of this graph?

• (-2,6)

• (-0.5,-3.5)

• (-1,-3)

• (3,0)

Find the vertex

• (2, -2)

• x = 2

• (-2, 2)

• (0, 4)

The graph of a quadratic function is called a

• Parabola

• Vertex

• Axis of Symmetry 

• Vertex Form

Find the increasing interval

• x<2

• x<0

• x>2

• x>-2

What is the domain of the function?

• x ≥ 3

• x ≤ 3

• All real numbers

• -1 ≤ x ≤ 5

Define X-intercept

• The highest or lowest point on the graph

• Where the parabola touches or intersects the x-axis

• Where the parabola touches or intersects the y-axis

• A line that divides the graph into two equal parts. i.e. cuts the graph in half

Define Y-intercept

• Where the parabola touches or intersects the x-axis, also called the x-intercept

• The lowest y-value on the graph

• The highest y-value on the graph

• Where the parabola touches or intersects the y-axis