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1. TAKE OUT YOUR HOMEWORK!! Do-Now 01/12/2014 2. ON YOUR NOTES WORKSHEET: Objective: Find an exact solution to a system of linear equations by using the substitution method. Steps to Solving a System of Linear Equations by SUBSTITUTION: 1. Solve one of the equation for one of the variables. 2. Substitute the expression from Step 1 into the other equation and solve for the other variable. 3. Substitute the value from Step 2 into one of the original equations and solve. Examples. 1. 2. Examples. 3. 4. Examples. 5. 6. Check for Understanding: A. B. C. Homework: Page 245 #9-12, 32 Do Now! Solve using substitution! Do on your homework paper. 1. y= 6x x + y = 28 2. a = 3b a – b = 12 What happens when one of the equations is not solved for a variable? Examples: 7. 8. Examples: 9. 10. Real Life Example: A theater earns $3640from a concert. An orchestra ticket costs three times as much as a balcony ticket. Ticket Type Number Sold Orchestra Balcony 148 76 Write a system of linear equations that represents this situation. What is the price of each type of ticket? H. There are a total of 64 students in a drama club and a yearbook club. The drama club has 10 more students than the yearbook club. Write a system of linear equations that represents this situation. How many students are in each club? Homework: Page 245 #13-16, 18, 20, 25