1. Pay attention in class

2. 1.3-1.4 Review of Linear Equations
Objectives: Graph linear equations, find x and y intercepts, find slope, and find zeros of linear functions. Write linear equations.

3. Standard Form (Linear equation): Ex. 1) Slope: Ex. 2)
Ax + By = C (book will use Ax + By + C = 0)
Where A & B are not both zero
Ex. 1)
Graph x + 2y – 4 = 0 using the intercepts (cover-up
method)
Slope:
Ex. 2)
U.S. consumers have seen an increase in direct marketing in recent years. At the end of 2007, telephone marketing made up 7.7% of the market. By the end of 2012, that share was projected to increase to 9.4%. What is the average rate of increase in the percent share of telephone marketing?
*slope is the rate of change in the y-coordinates for each 1-unit increase in the x-coordinates.

4. Slope-intercept Form: Ex. 3) Ex. 4)
y = mx + b , m is the slope and b is the y-intercept
Ex. 3)
Graph using the y-intercept and the slope
a.) y = -½x + 4
b.) 3x + y = 6
Find the zero (where graph hits x-axis) of each function. Then graph it.
a.) f(x) = -2x + 8
b.) f(x) = 3
Ex. 4)

5. Write an equation in slope-intercept form for each line Described.
Types of
slopes
Positive Negative slope undefined
(constant slope)
Writing Equations
Write an equation in slope-intercept form for each line
Described.
a.) slope of ½ and y-intercept of 4.
b.) a slope of 2 and passes through (-3,-2)
Ex. 5)

6. Ex. 6) Ms. Duffy is preparing her art classroom for a new year of
Ms. Duffy is preparing her art classroom for a new year of
school. She placed a purchase order for $800 to buy
paper, chalk, and clay. In addition, she expects the
expenses each month to be $120. Write an equation that
models the total expense y after x months.
Ex. 6)
See example 3 in book as well