1. Do Now Take out your homework.

2. 7.1: Graphing Linear Systems Objective: Graph linear systems on a graphing calculator HW: 7.1 Practice Quiz on 7.1-7.2: Friday, 2/15/13

3. Press WINDOW to make sure you have the same settings: Remember: Anytime you want to get back to the main window, press 2 nd & MODE. If you want to type in equations, press Y=

4. Graph equations on the calculator Use a graphing calculator to estimate the solution of the linear system. y = -0.3x + 1.8 y = 0.6x – 1.5

5. Graph equations on the calculator Press Y= Press GRAPH Press 2 nd TRACE and then 5, ENTER 3 times

6. Try it! Graph the following linear systems to estimate their solutions. 1.y = x + 6 y = -x – 1 2.y = -3x – 2 y = x + 8 3.y = -0.25x – 2.25 y = x – 1.25 4.y = 1.33x – 20 y = 0.83x – 8.5 Press Y= Press 2 nd TRACE and then 5, ENTER 3 times