Transcript Do-Now 01/12/2014

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