1. Chapter 3 Section 1

2.  System of Equations: a group of 2 or more lines graphed on the same coordinate plane  Ax + By = C ----------- Equation 1  Dx + Ey = F ----------- Equation 2  Solution: the solution to the system is the point (x, y) where the 2 equations/lines intersect  Two exceptions:  Parallel Lines: No solutions – the lines never intersect  Same line : IMS- The lines intersect everywhere

3.  1 solution:  No Solution:  IMS:

4.  1.) Graph the first equation on the coordinate plane  2.) Graph the second equation on the same coordinate plane  3.) Find the point where the 2 lines intersect- or determine if they are the same/parallel lines  4.) Check if the point works in both equations

5. 1.) y = -x + 3 2x -3y = 1

6. 2.) 2x -2y = -8 2x + 2y = 4

7. 3.) 3x -2y = 6 6x – 4y = 12

8. 4.) 3x – 2y = 6 3x – 2y = 2

9.  Visual  Tedious/Precious/Neat  Predictions  Fractions- answers?  Time consuming

10.  Pg 142 # 4-6, 7-9, 10

11.  Verizon: $25/month; 10 cents a minute  AT&T: $20/month; 5 cents a minute  If you talk for 100 minutes a month, which plan is better for you?