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Chapter 3: Q. 5 (page 136)

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

Short Answer

Expert verified

So,f(-2)=0.

Step by step solution

01

Given Information

Given thatf(x)=x2-4.

02

Solution

Here, f(x)=x2-4

localid="1645800513470" f(-2)=(-2)2=4f(-2)=4-4f(-2)=0.

03

Final Answer

Hence,f(-2)=0.

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Most popular questions from this chapter

In Problems 7鈥�22, solve each inequality.

2(2x2-3x)>-9

Find the slope of the line joining the points(2,5) and(-1,3).

Graph the function fby starting with the graph of y=x2and using transformations (shifting, compressing, stretching, and/or reflection). Verify your results using a graphing utility.

Hint: If necessary, write fin the form f(x)=a(x-h)2+k.

f(x)=3x2+6x

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

xy=f(x)
-2-4
-10
04
18
212

Graph the function fby starting with the graph of y=x2and using transformations (shifting, compressing, stretching, and/or reflection). Verify your results using a graphing utility.

Hint: If necessary, write fin the form f(x)=a(x-h)2+k.

f(x)=2x2-4x+1
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