Precalculus : Graph a Polynomial Function

Study concepts, example questions & explanations for Precalculus

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Example Questions

Example Question #3 : Graphs Of Polynomial Functions

Graph .

Possible Answers:

Varsity10

Varsity2

Varsity12

Varsity1

Varsity11

Correct answer:

Varsity1

Explanation:

is a parabola, because of the general  structure.  The parabola opens downward because .  

Solving tells the x-value of the x-axis intercept;

The resulting x-axis intercept is: .

Setting  tells the y-value of the y-axis intercept;

    

    

    

The resulting y-axis intercept is:

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