Key Features of a Parabola Word Problems

Is this point a max or min?

• max

• min

Identify the vertex

• (-1,-9)

• (0,-8)

• (-4,0)

• (0,0)

When did the ball reach its maximum height? Choose the key feature and the answer.

• y-intercept, 3 secs

• x-value of the vertex, 4 secs

• y-value of the vertex, 5 secs

• y-intercept, 0 secs

What is the axis of symmetry of the above graph?

• x = 3

• 3

• y = -1

• -1

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A bridge is built in the shape of a parabolic arch. The arch is 100 feet wide at its base and 20 feet high at its center. How high is the arch 25 feet away from its center?

• 15 feet

• 16 feet

• 18 feet

• 20 feet

A satellite dish is shaped like a parabola with the receiver located at the focus. If the dish is 12 feet across at its opening and 4 feet deep, how far from the vertex is the receiver located?

• 1 foot

• 2 feet

• 3 feet

• 4 feet

Find the focus and the directrix.

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• 
• 

What is the x value of the graph when the graph is at its max(or min)?

• -1

• 3

• -0.5

• (3,-1)

What is the significance of the point (-3, 18)?

• x-intercept

• y-intercept

• vertex

• axis of symmetry