1. Solving Systems of Equations and Inequalities
2-2-09
IMP4
Sia

2. Seating Chart Brandon Jackson Chloe Robinson Vere Valles Lili Guerrero
Omar Nunez
Laura Macias
Michael Santiago
Valeria Pena
Eric Jara
Eduardo Hernandez
Angel Arroyo
Chris Lymon
Perfecto Aguilar
Lisa Nichols
FRONT
Silvia Barba
Antonia Steward

3. Today’s Agenda Bell ringer Go over QUIZ from Friday
Finish HW2: Heavy Flying
HW6 due Friday, February 6th

4. Bell ringer
Use your notes to identify which method of solving systems would be best.
Solve the system of equations.

5. Solutions to bell ringer
Since we have same number coefficients with opposite signs, elimination would be most efficient.
Simply ADD the equations.

6. Solutions to bell ringer
Since we have two expressions equal to y, setting y’s equal would be most efficient.
Simply set the expressions equal to each other and solve for x.

7. Solutions to bell ringer
Since we have one variable by itself, solving by substitution would be most efficient.
Simply plug in the expression for x into the other equation.

8. Announcements HW Hall this Tuesday and Thursday until 4:30pm
HW6 due Friday, February 6th
EC binder is at the front of the room

9. Don’t forget… Lisa: I will be here every day. Brandon:
I will finish more HW.
Vere:
I will ask for more help.
Lili:
I will do my HW.
Eduardo:
Silvia:
Angel:
I will go to HW Hall when I need help.
Omar:
I will try to do HW.
Antonia:
I will come to HW Hall when I need help.
Chris:
Ms. Sia:
I will be more patient and understanding.

10. QUIZZES We need help with:
Solving systems of equations
Knowing the difference between solving for y and solving systems of equations
Identifying a solution on a graph
EXPECT A RETAKE THIS FRIDAY, FEBRUARY 6TH IN CLASS!

11. HW2: Heavy Flying Recall what we’ve already done:
Represent the constraints as inequalities
Solved the inequalities for y (or C)
Graphed the inequalities on our calculators
OUR TASK: determine how many cartons Linda should carry to maximize profits
By the end of this week, we should be able to do this without graphing!

12. This Week’s HW HW6 is due Friday, Febraury 6th
PLEASE come to HW Hall if you need help completing this assignment!