Quadratic Feature from Word Problems

A kid launches a rock off of a cliff. The height of the rock after t seconds can be modeled by the graph shown. What is the maximum height the rock reaches ?

• 1.094 ft

• 174.141 ft

• 155 ft

• 4.393 ft

• None of the above

A ball is thrown into the air from the edge of a 48-foot-high cliff so that it eventually lands on the ground. The graph below shows the height, y, of the ball from the ground after x seconds.

For which interval is the ball's height always decreasing?

A kid launches a rock off of a cliff. The height of the rock after t seconds can be modeled by the graph shown. What is the height of the cliff?

• 1.094 ft

• 174.141 ft

• 155 ft

• 4.393 ft

• None of the above

A kid launches a rock off of a cliff. The height of the rock after t seconds can be modeled by the graph shown. How long does it take the rock to reach its maximum height?

• 1.094 seconds

• 174.141 seconds

• 155 seconds

• 4.393 seconds

• None of the above

The path of a kicked football is shown in the graph below. What is the MAXIMUM HEIGHT the football reaches?

• 50 feet

• 20 seconds

• 50 seconds

• 20 feet

The path of a kicked football is shown in the  graph below. When will the ball reach its maximum?

The path of a kicked football is shown in the  graph below.  When will the ball hit the ground?

• 0 seconds

• 40 seconds

• 40 feet

• 50 feet

Sarah throws the javelin for her school’s track and field team. The graph below shows the height and horizontal distance traveled by the javelin for three of Sara's practice throws.

Which javelin throw went the closest to 45 feet?

• Throw #1

• Throw #2

• Throw #3

Sarah throws the javelin for her school’s track and field team. The graph below shows the height and horizontal distance traveled by the javelin for three of Sara's practice throws. Which graph feature shows the starting height for each throw?

• Maximum

• Vertex

• X-Intercept

• Y-Intercept

This shape of graph is called a _______ because this function is ________.

• quadratic; parabola

• parabola; quadratic

• curve; exponential

• line; linear