Interpreting Quadratic Functions

The graph represents the height of a rocket that is launched from the top of a building. Which statement best describes the path of the rocket?

• The rocket reached the ground between 2.25 seconds and 2.5 seconds.

• The rocket was below 34 feet between 0.25 seconds and 1 second

• The rocket reached its maximum between 1 second and 1.25 seconds.

• The rocket descended 8 feet between 1.5 seconds and 1.75 seconds.

The graph shows the height of a ball versus time for one bounce. For how many seconds was the ball at a height of 7 feet or more above the ground?

• 0.25 seconds

• 1 second

• 1.5 seconds

• 1.75 seconds

The table represents some points on a graph of quadratic function g. Which statement about the graph of g is true?

• The graph of g has an x-intercept between 0 and 2.

The graphs of quadratic functions f and g have the same x-intercepts. Which of these statements are true about f and g?

• I only

• II only

• I and IV only

• II and III

Analyze the given graph and the determine the correct function.​ (a)   ​ (b)  

• x(x-2)

• x+(x-2)

• (x+4)(x+5)

• (x-0)

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 

Which of the following represents a quadratic function?

• 1

• 3

• 2

• 5

• 4

Answer explanation

This is only one possible choice. As long as the y-intercept is less than 3 and the quadratic shows a maximum value for its vertex, it would be correct.