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Chapter 3: Q. 5 (page 136)

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

Short Answer

Expert verified

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

Step by step solution

01

Given Information

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

02

Solution

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

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

03

Final Answer

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

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Most popular questions from this chapter

Show that the inequality ${(x - 2)}^{2} > 0$ has one real number that is not a solution.

For the graph of the linear function $H (z) = - 4 z + 3$ , the slope is_____ and the y-intercept is_____.

In Problems 7–22, solve each inequality.

$6 (x^{2} - 1) > 5 x$

If $g (x) = 5 x - 4,$ then

(a) Determine the slope and y-intercept of each function.

(b) Use the slope and y-intercept to graph the linear function.

(c) Determine the average rate of change of each function.

(d) Determine whether the linear function is increasing, decreasing, or constant

In Problems 4 and 5, determine whether the function is linear or nonlinear. If the function is linear, find the equation of the line.

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