1. Lines, Slopes, Equations
Writing Equations in Slope-Intercept Form
Slope-Intercept Form
A linear equation in the form y = mx + b, where m is the slope, and b is the y-intercept
Write the equation in slope-intercept form. Find the slope and the y-intercept.

2. Writing Equations in Slope-Intercept Form
A linear equation in the form y = mx + b, where m is the slope, and b is the y-intercept
Write the equation in slope-intercept form. Find the slope and the y-intercept.

3. Writing Equations in Slope-Intercept Form
A linear equation in the form y = mx + b, where m is the slope, and b is the y-intercept
Write the equation in slope-intercept form. Find the slope and the y-intercept.

4. LINES could be Parallel, Perpendicular, or Neither
Parallel Lines
Two non-vertical lines that have the same slope.
1) y= - 3x
2) x + y – 5 =0
3) 3x + y = 5
7. Which two lines in Exercises 1 – 3 are parallel?
Lines 1 and 3 both have a slope of –3, so they are parallel.
LINES could be Parallel, Perpendicular, or Neither

5. Perpendicular Lines’ slopes are Opposite Reciprocals
Of each other
Examples of Opposite Reciprocals:
3 and -1/3; ¾ and - 4/3;
1/5 and - 5; and - 10
0 (ZERO) and undefined Slope –
HORIZONTAL and VERTICAL lines

6. Graphing LINES Using Slope and y-Intercept
Write the equation in slope-intercept form. Then graph the equation.
Right 1
Up 6

7. Graphing LINES Using Slope and y-Intercept
Write the equation in slope-intercept form. Then graph the equation.
Down 1
Right 3

8. Graphing LINES Using Slope and y-Intercept
Write the equation in slope-intercept form. Then graph the equation.
Down 5
Right 1

9. Graphing LINES Using Slope and y-Intercept
Write the equation in slope-intercept form. Then graph the equation.
Down 1
Right 3

10. Graphing LINES Using Slope and y-Intercept
Write the equation in slope-intercept form. Then graph the equation.
Down 2
Right 1

11. Graphing LINES Using Slope and y-Intercept
Write the equation in slope-intercept form. Then graph the equation.
Down 1
Right 2

12. Find the slope and y-intercept of the equation?
Using Slope-Intercept Form to Solve a Real-Life Problem
14. During the summer you work for a lawn care service. You are paid $4 per day, and an hourly wage of $1.75.
Using w to represent daily wages and h to represent the number of hours worked daily, write an equation that models your total wages for one day’s work.
Find the slope and y-intercept of the equation?
What does the slope represent?

13. Graph the equation using the slope and y-intercept.
Using Slope-Intercept Form to Solve a Real-Life Problem
14. During the summer you work for a lawn care service. You are paid $4 per day, plus an hourly wage of $1.75.
Graph the equation using the slope and y-intercept.
Right 1
Up 1.75

14. Find the slope and y-intercept of the equation?
Using Slope-Intercept Form to Solve a Real-Life Problem
15. During the summer you work for a lawn care service. You are paid $6 per day, plus an hourly wage of $1.25.
Using w to represent daily wages and h to represent the number of hours worked daily, write an equation that models your total wages for one day’s work.
Find the slope and y-intercept of the equation?
What does the slope represent?

15. Graph the equation using the slope and y-intercept.
Using Slope-Intercept Form to Solve a Real-Life Problem
15. During the summer you work for a lawn care service. You are paid $6 per day, and an hourly wage of $1.25.
Graph the equation using the slope and y-intercept.
Right 1
Up 1.25