1. Ch2.3_LinearFunctions.notebook September 12, 2011
Warm Up
Are these functions?
{(1,2)(2,3)(3,2)(1,2)}
y = |x+2| ± 3
Chapter 2.3
Linear Functions
1
2. Ch2.3_LinearFunctions.notebook September 12, 2011
Linear Function
When graphed, it will be a straight line
y = x + 2
or
f(x) = x + 2
Graph y = 2x + 3
x y
2
3. Ch2.3_LinearFunctions.notebook September 12, 2011
Equation of a Line
y = mx + b
m is the slope
b is the yintercept
Graph y = 3x + 1
Slope =
yintercept =
3
4. Ch2.3_LinearFunctions.notebook September 12, 2011
Graph y 8 = 2x
Slope =
yintercept =
Graph 3x + y = 1
Slope =
yintercept =
4