G8

Quadratics

100

x² - 2x - 4 = 0

x =

x2 - 2x - 4 = 0

x = 1 +/- sqrt(5)

200

x² - 5x - 10 = 0

x =

x² - 5x - 10 = 0

x = 5/2 +/- sqrt(65)/2

300

3x² - 10x + 4 = 0

x =

3x2 - 10x + 4 = 0

x = 5/3 +/- sqrt(13)/3

400

Find the vertex: y = 4x² + 2x - 1

Find the vertex: y = 4x² + 2x - 1

vertex = (-1/4, -5/4)

500

-2x² - 6x + 2 = 0

x =

-2x² - 6x + 2 = 0

x = -3/2 +/- sqrt(13)/2

Sinusoidal Functions

300

What is the equation of the purple sinusoidal function? (no phase shift)

What is the equation of the purple sinusoidal function?

y = 2sin(2Pix)

400

What is the equation of the red sinusoidal function? (no phase shift)

What is the equation of the red sinusoidal function? (no phase shift)

y = -3sin(Pix) + 4

500

What is the equation of the red sinusoidal function? (no phase shift)

What is the equation of the red sinusoidal function? (no phase shift)

y = -Picos(Pix) - 1

Mean, Median, Mode, Range

100

14, 18, 22, 27, 32

Mean: 22.6

Median: 22

Range: 18

Mode: None

300

7,7,8,9,12,15,18,9,24,36,45

Mean: 19.3333...

Median: 15

Range: 38

Mode: None