Graphing Quadratic Functions

Parabolas may open in which direction?

• Upwards

• Downwards

• Either

• Neither

A parabolas vertex may be described as?

• Its lowest point

• Its highest point

• Both its lowest and highest point

• Either its lowest or highest point

Which of the following ordered pair is the vertex of the equation $y=\ -x^{2\ }+\ 2x\ +\ 1?$  

• (1, 2)

• (2, 1)

• (0, 1)

• (1, 0)

In which direction does the parabola open for the following equation  $y\ =\ -x^{2\ }+\ 2x\ +\ 1$  

• Up

• Down

• Left

• Right

What is the name of this form:  $y\ =\ ax^{2\ }+\ bx\ +\ c$  ?

• Standard form

• Factored form

• Point-slope form

• Expanded form

How can you tell if a parabola opens upwards or downwards simply by looking at the equation?

• All parabolas open upwards.

• All parabolas open downwards.

• The value of "a" tells you the direction of the opening.

• It is impossible to determine simply by looking at the equation.

Which ordered pair represents the y-intercept for the equation  $y\ =\ -x^{2\ }+\ 2x\ +\ 1$  ?

• (2, 1)

• (1, 2)

• (1, 0)

• (0, 1)

A parabola intersects the x-axis at x = 2 and at x = 10. What is the x-coordinate of its vertex?

• 4

• 5

• 6

• 7

A parabolas axis of symmetry is defined as?

• A geometric tool used to draw circles and arcs.

• An angle whose measure is between 90 and 180 degrees.

• The border or outer boundary of a 2-dimensional figure.

• A vertical line through the vertex which divides the figure in half.