1. 7.3 Linear Equations and Their Graphs

2. y X x - intercept y - intercept
Definitions. Instruct student to add to notebook.
y - intercept

3. Graphing using Intercepts
Let x=0 and determine the y-intercept.
Let y=0 and determine the x-intercept
Plot both points. Connect them with a line.
More for notebook

4. Graph 4x + 3y = 12 using intercepts
Find x-intercept
4x + 3(0) = 12
Find y-intercept
4(0) + 3y = 12
4x = 12
3y = 12
x = 3
y = 4
Teach and demonstrate the concept.

5. Graph 2x + 3y = 12 using intercepts6
This slide introduces the X-Y intercept table. Teach and demonstrate the steps.

6. Graph 3x + 5y = 15 using intercepts5
Have students make an intercept table and graph the equation on each of the next 6 slides. The steps are shown for students still needing to see it. I provide graph paper with 6 graphs per front and back.

7. Graph 5x - 2y = 10 using intercepts2

8. Graph 2y = 3x - 6 using intercepts2
This is the first problem not in slope intercept form and will catch many. Teach.

9. Homework
Page 316 (16-32) even

10. 7.3 day 2 continued

11. Horizontal and Vertical Lines
The graph of y= # is HORIZONTAL
The graph x =# is VERTICAL

12. Graph y=4 x y 3 6

13. Graph x=6 x y 3
- 4

14. Graph x =-2

15. Graph y= -1

16. Graph x=3

17. Graph y = -4

18. Assignment
Page 316 (34-41) all