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Big Ideas Math Integrated I, 2016 View details

3. Function Notation

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Exercise 5 Page 125

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

13, 9, and -1

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=-2.

h(x)=-2x+9

Substitute

x= -2

h( -2)=-2( -2)+9

MultNegNegOnePar

- a(- b)=a* b

h(-2)=2 * 2+9

Multiply

h(-2)=4+9

AddTerms

Add terms

h(-2)=13