Quadratic Functions and Statistics - Exam Quiz #2

• a = 2; b = 3; c = 4

• a = 2; b = -3; c = 4

• a = 2; b = -3; c = -4

• cannot be determined

A parabola has a vertex at (-3,2). Where is the axis of symmetry?

• y = -2

• x = 3

• x = -3

• y = 2

What is the green dashed line called?

• roots or x-intercepts

• parabola

• axis of symmetry

• y intercept

Using your calculator, find the x-intercepts of:

f(x) = x² + 13x + 12

• x = -1, x = -12

• x = -1, x = -24

• x = -2, x = -6

• x = -2, x = -12

Find the mean for the following data set:

2, 3, 3, 3, 5, 8, 10, 12, 15, 16

Using your calculator, find the median for the following data set:

2, 3, 3, 3, 5, 8, 10, 12, 15, 16

Find the mode for the following data set:

2, 3, 3, 3, 5, 8, 10, 12, 15, 16

Find the range for the following sample data:

6, 6, 7, 9, 10, 15, 20

• 6

• 14

• 9

• 20