Quadratic Functions Answers

Select all of the following functions that are quadratic.

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What is the axis of symmetry of the quadratic function y = 2(x + 3)2 + 5?

A quadratic function has a line of symmetry at x = –3 and a zero at 4.What is the distance from the given zero to the line of symmetry?

The graph of a quadratic function is shown. Check all of the following statements that are true of the function.

What is the football’s maximum height? Round to the nearest tenth. yds.

What number of units would produce a maximum cost? 100600✔ 1,0006,000

What is the maximum cost? $100,000✔ $300,000$500,000$600,000

Crickets can jump with a vertical velocity of up to 14 ft/s. Which equation models the height of such a jump, in feet, after t seconds? h(t) = –16t2 + v0t + h0

What is the maximum height the cricket reaches? Round to the nearest thousandth.h = feet

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What is the other zero of the quadratic function?

How far is the football kicked? yds.

What is the cricket’s hang time (amount of time the cricket is airborne)? Round to the nearest thousandth.t = seconds