Linear Functions

1
Linear Functions

• Lesson 8-3 Notes

2
Introduction

• Read aloud skills development pg 320-321

3
Vocabulary

• Domainx values
• Rangey values
• Real NumbersRepeating and Terminating numbers
• Positive Reals0,1,2,3,4,
• Negative Reals
• -3,-2,-1,0

4
Example 1

• Graph y 5x 2
• When the domain is the set of real numbers
• use the graph to show that all the points form
  a line therefore it is a linear equation

5
Example 2
Graph 3x y 5 Tell whether or not it is a
linear equation
6
How do you tell if a graph is linear?

• Look at the power on the variable if the power
  is 1 then the equation is linear

7
Linear or non-Linear

• 18x y 1

8
Example 4

• Decide if the equation is linear or non-linear
  and graph the function
• -x 4y 0

9
Extra Practice

• Measure up pg 149

10
HOMEWORK

• Pg 322 1-6, 10-15, 20, 21