October 11 th , 2011

1. October 11th , 2011 Happy Birthday yesterday to: Tron Luu Turn in car projects on the overhead please 

2. In your groups, go over HW #1-5. • Check boxes switched correctly. • Check correct distributing. • Check correct combining like terms. • Check correct first answer. • Check correct substituting to find second part of the answer. • Check correct “solution”.

3. 1) Which ordered pair is a solution to the system of equations listed below? 5x + 3y = 15 y = 2x – 6 A. (1, 2) B. (3, 0) C. (6, 1) D. (-3, 1) Discuss in your group the correct “METHOD” to get the correct answer. What is the correct answer?

4. 2) Lakitaand Tanisha are writing a short skit for theater class. Tanisha has 1 less than twice the number of lines of dialogue that Lakita has. Together they have 13 lines of dialogue. Which system can be used to find l, the number of dialogue lines Lakita has, and t the number of dialogue lines Tanisha has? A. l + t = 13 C l + t = 13 t = 2l – 1 t = 2l + 1 B l + t = 13 D l + t = 13 l = 2t – 1 t = 1 – 2l Discuss “why” you picked that answer.

5. 3) Writing: A mistake has been made in the solution. Explain the error and how to correct it.

6. 4) Writing: A mistake has been made in the solution. Explain the error and how to correct it.

7. 5. Michael works in the summer at the local ice cream shop that sells pints and quarts of ice cream. A pint of ice cream sells for $5 and a quart for $7. One day, Michael sold 3 more pints than quarts for total sales of $39. Create a system of linear equations that could be used to find x, the number of pints and y, the number of quarts. Let P represent ________________ Let Q represent _______________ Write a systems of equations & solve. Label your answers.

8. 6. Mrs. Henry took her family to the movie theater where an adult’s movie ticket, A costs $8 and a child’s movie ticket, C costs $6. The number of adult’s movie tickets purchased was 3 less than twice the number of child’s movie tickets purchased. Mrs. Henry spent $42 on the tickets. Create a system of linear equations that could be used to find the number of adult’s and child’s movie tickets purchased. Let A represent ________________ Let C represent _______________ Write a systems of equations & solve. Label your answers.

9. 7) Tasha’s grandmother made her a new quilt for her college dorm room. The perimeter of the quilt is 12 feet. The length, L, is 2 feet more than the width, W. Create a system of linear equations that could be used to find the dimensions of the quilt. Let W represent ________________ Let L represent _______________ Write a systems of equations & solve. Label your answers.

10. Review for tomorrows quiz… Solve the system by graphing: x = 5 + y x – y = 5

11. Review for tomorrows quiz… • Systems of equations that result in exactly the same line (the same slope and the same y-intercept) have ______ (no solution, one solution or infinitely many solutions)?

12. Review for tomorrows quiz… Solve the system by graphing: x = -2 + y x – y = 5

13. Review for tomorrows quiz… • Systems of equations that result in parallel lines (the same slope and a different y-intercept) have ______ (no solution, one solution or infinitely many solutions)?

14. Review for tomorrows quiz… x < 7 y > -2 • Graph the solution to the system:

15. What does the dashed line verses the solid line mean in the previous solution?

16. Homework Finish the worksheet from Friday. All of it, including the word problems. Show Work!