Quadratic Word Problem

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What kind of graph is this?

• Linear

• Quadratic

• Exponential

Which strategy can I use to solve this problem?

• Solve Systems

• Linear Regression

• Quadratic Regression

• Exponential Regression

(Hint: Use control-t or graph trace to find zeros!)

• F

• G

• H

• J

• A

• B

• C

• D

The sum of a number and its square is 72. Find the number(s).

• 8 or 9

• 8 or -9

• -8 or 9

• -8 or -9

Answer to part c is....

An equation of the form ax² + bx + c = 0, where a ≠ 0.

• Quadratic Equation

• Standard Form of a Polynomial

• Squared

• Algebra

An object in launched directly upward at 64 feet per second (ft/s) from a platform 80 feet high. Its height is represented by the equation

s(t) = –16t² + 64t + 80

What will be the object's maximum height?

• 2 ft

• 80 ft

• 144 ft

• 64 ft