1. November 12 th, 2015 Ms.Naumann Algebra

2. Warm Up Think back to yesterdays situation…The Marshall High School Athletic Association sells tickets for the weekly football games. Students pay $5, and adults pay $10 for a ticket. We came up with the expression 5s+10a, to represent the total amount of money earned. Supposed they earned a total of $3,000, and you know they sold 175 adult tickets. How many student tickets did they sell?

3. Announcements Unit 2 Retakes TODAY (3:30-5:30) If you can not come today, talk to me after class Unit 2 Carnegie due November 16 th We will be working on Carnegie tomorrow Today we are continuing section 3.2

4. Learning Goals Analyze real world situations with two unknown values. Find the x and y intercepts of a graph, from their equation, and explain their literal meaning. Solve an equation for a variable, using inverse operations. Use both standard, and slope intercept form to represent real world situations.

5. Warm up Answer 5s+10a=3,000 5s+10(175)=3,000 5s+1,750=3,000 -1,750 -1,750 5s=1,250 s=250 student tickets

6. Football Example Continued The Marshall High School Athletic Association sells tickets for the weekly football games. Students pay $5, and adults pay $10 for a ticket.

7. Football Example Continued 5s+10a=3,000 It is equal to a fixed amount of money, no matter what the team is earning $3,000

8. # of student tickets sold # of adult tickets sold Amount earned from student tickets Amount earned from adult tickets Total Amount earned Tickets Money $ 1,2503,000 1,750175 1,500 300 00 3,0000 0

9. Football Example Cont

11. X-intercept: where the graph is crossing the x-axis TO FIND PLUG IN 0 FOR THE Y VALUE y-intercept: where the graph is crossing the y-axis TO FIND PLUG IN 0 FOR THE X VALUE IS x and y intercepts

12. Too find x-intercept: plug in 0 for yToo find y-intercept: plug in 0 for x

13. (0,300) (600,0)

14. Football Example Cont

15. Standard/Slope Intercept Form