Model Quadratics

Find the axis of symmetry for the graph

• x = -1

• x = 1

• x = 3

• x = -1 , 3

What is the vertex?

• (0, - 1)

• (0, 0.5)

• (-1, 0)

• (0.5, 0)

Find the vertex of f(x) = 2x² - 6x + 1

• x = 1.5

• x = 0.666...

• x = 3

• x = -3

Which of the following functions graphs the parabola shown?

• y = -x² - 6

• y = -x² + 6

• y = x² - 6

• y = x² + 6x

Which of the following represents a quadratic function?

• 
• 
• 
• 

A company collected data for the number of text messages sent and received using a text-message application since October 2011. The table shows the number of text messages sent and received in billions over time. The data can be modeled by a quadratic function. Which function best models the data?

• A

• B

• C

• D

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

A company collected data for the number of text messages sent and received using a text-message application since October 2011. The table shows the number of text messages sent and received in billions over time. The data can be modeled by a quadratic function. Which function best models the data?