1. Warm Up Sketch by finding x and y intercepts. 2x + 3y = 12
Sketch by using slope and y-
intercept.
Sketch by finding x 
and y intercepts.
2x + 3y = 12

2. Sketch by finding x 
and y intercepts.
2x + 3y = 12

3. Sketch by using slope and y-
intercept.

4. Unit Tests will be marked and given back Monday!
*Hand in Ambiguous Case Worksheet!

5. Last Year...
-You learned how to graph lines using:
slope intercept form
slope point form
general form

6. REVIEW
-Plot points on a grid
A (-1, -4)
B (0, 5)
C (-5, 2)

7. Intercepts
-the x-intercept occurs when y = 0
-the y-intercept occurs when x=0
Example: Find the y-intercept in y= 2x -1
Example: Find the x-intercept in y=2x-1

8. Slope y = rise = y2 - y1 run x2 - x1

10. Slope Intercept Form
y = mx + b

11. Graph y = 5x + 3

13. Slope Point Form
y2 - y1 = m(x2 - x1)
Point:

14. Graph: (-2, 1) and slope 3
What is the equation?

15. General Form
Ax + By + C = 0
How would we graph an equation in this form?
Convert!

18. Independent Practice:
Graphing Lines Worksheet
*Due Monday!

19. Systems of Linear Inequalities
Unit #4
Systems of Linear Inequalities
System of Equations: Any number of equations involving the
same variables
To solve a system of equations means...
 1. to find the point of intersection of two or more graphs
 2. to find the values of the variables which satisfy all 
  given equations
We have actually studied systems of equations in the Grade 9 
and Grade 10. Think back to comparing two Internet 
companies or two Taxi companies. In this chapter we will 
look at numerous methods for solving these equations, and 
numerous applications for this topic.

21. Ex: Does the point (4, 3) satisfy the following system of 
equations?

22. Ex: Solve this system graphically. Verify your solution.

23. Ex: Solve this system graphically. Verify your solution.

24. Worksheet #1
p. 409 # 3, 4, 5 ab (i and iii), 6, 7ac, 8