Quadratic Function Vocabulary

What does the 'a' in the quadratic function f(x) = ax² + bx + c determine?

• The width of the parabola

• The direction of the parabola: upward if a > 0, downward if a < 0

• The vertex of the parabola

• The x-intercepts of the parabola

The graph of a quadratic function is called...

• a parabola

• a hyperbola

• a circle

• an ellipse

Tags

CCSS.HSF-IF.C.7A

Which of these is true about the roots of a quadratic graph?

• Roots are where the graph crosses the x-axis.

• Roots are the maximum points of the graph.

• Roots are the minimum points of the graph.

• Roots are the points where the graph is vertical.

Tags

CCSS.HSF-IF.C.7A

What is the range?

• @@y \ge -4@@

• @@(-4, \infty)@@

• @@(-\infty, -4)@@

• @@y > -4@@

Tags

CCSS.8.F.A.1

CCSS.HSF.IF.B.5

What is the axis of symmetry in a quadratic function?

• The horizontal line that divides the parabola into two mirror images.

• The vertical line that divides the parabola into two mirror images, given by @@x=rac{-b}{2a}@@

• The point where the parabola intersects the x-axis.

• The line that passes through the vertex of the parabola and is parallel to the x-axis.

The roots of this parabola are....?

• {-1, 3}

• (0, -1) and (0, 3)

• (-1, 1) and (3, 1)

• (-1, 0) and (3, 0)

The vertex of this parabola is a _______?

• maximum

• minimum

• constant

• undefined

Tags

CCSS.HSF-IF.C.7A

The equation @@y = x^2 - 2x - 3@@ in factored form is....

• @@y = (x - 3)(x + 1)@@

• @@y = (x + 2)(x - 1)@@

• @@y = (x - 1)(x - 3)@@

• @@y = (x + 1)(x - 3)@@

Tags

CCSS.HSA-SSE.B.3B

CCSS.HSF-IF.C.8A

A point on a graph that has the coordinates (0,___) is called a...

• y-intercept

• x-intercept

• slope

• origin

The domain of any parabola is all real numbers. True or False?

• True

• False

• Only for vertical parabolas

• Only for horizontal parabolas