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Big Ideas Math Integrated I, 2016

BI

Big Ideas Math Integrated I, 2016 View details

Chapter Review

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Exercise 8 Page 157

To evaluate a function for a given value of the variable, substitute the value for the variable.

f(- 3)=5, f(0)=8, f(5)=13

Practice makes perfect

To evaluate a function for a certain value of x means that we substitute the given value for every instance of x. Let's do this for the given function when x=-3.

f(x)=x+8

x= - 3

f( - 3)= - 3+8

Add terms

f(- 3)=5

When x=-3, the function's value is 5. We will evaluate this function for x=0 and x=5 in the same way using the table below.

x	x+8	f(x)
0	0+8	8
5	5+8	13

Subchapter links

1 Functions p.156

2 Linear Functions p.156

3 Function Notation p.157

4 Graphing Linear Equations in Standard Form p.157

5 Graphing Linear Equations in Slope-Intercept Form p.158

6 Transformations of Graphs of Linear Functions p.158