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Q. 5

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Precalculus Enhanced with Graphing Utilities

Found in: Page 136

Book edition 6th

Author(s) Sullivan

Pages 1200 pages

ISBN 9780321795465

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Short Answer

If $f (x) = x^{2} - 4$ , find $f (- 2) .$

So, $f (- 2) = 0 .$

See the step by step solution

Step by Step Solution

TABLE OF CONTENTS :

TABLE OF CONTENTS

Step 1 Given Information

Given that $f (x) = x^{2} - 4 .$

Step 2 Solution

Here, $f (x) = x^{2} - 4$

localid="1645800513470" $f (- 2) = {(- 2)}^{2} = 4 f (- 2) = 4 - 4 f (- 2) = 0 .$

Step 3 Final Answer

Hence, $f (- 2) = 0 .$

Most popular questions for Math Textbooks

In Problems 21–28, determine whether the given function is linear or nonlinear. If it is linear, determine the equation of the line.

x	$y = f (x)$
-2	-8
-1	-3
0	0
1	1
2	0

True or False The slope of a nonvertical line is the average rate of change of the linear function.

The $x$ -coordinate of the vertex of $f (x) = a x^{2} + b x + c, a \neq 0$ , is ________.

In Problems 21–28, determine whether the given function is linear or nonlinear. If it is linear, determine the equation of the line .

x	$y = f (x)$
-2	-4
-1	0
0	4
1	8
2	12

Match each graph to one the following functions.

$f (x) = x^{2} + 2 x + 1$

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Precalculus Enhanced with Graphing Utilities

Answers without the blur.

Short Answer

If $f (x) = x^{2} - 4$ , find $f (- 2) .$

Step by Step Solution

Step 1 Given Information

Step 2 Solution

Step 3 Final Answer

Most popular questions for Math Textbooks

Want to see more solutions like these?

Recommended explanations on Math Textbooks

Select your language

Precalculus Enhanced with Graphing Utilities

Answers without the blur.

Short Answer

If f(x)=x2-4, find f(-2).

Step by Step Solution

Step 1 Given Information

Step 2 Solution

Step 3 Final Answer

Most popular questions for Math Textbooks

Want to see more solutions like these?

Recommended explanations on Math Textbooks

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If $f (x) = x^{2} - 4$ , find $f (- 2) .$