1. Monday, September 30, 2013

2. Saturday & Sunday: 53 students logged on.
Sunday: 1430 minutes = 23.83 hours
Be sure to add me (V6math@gmail.com) as a
coach or I cannot see your progress
Topics for October 6, 2013
1. Absolute Value Equations
2. Equivalent forms of Expressions 1
3. Constructing & Solving Equations in the
Real World

3. Grades will only include:
 Class Work: 20%
 Khan Academy: 20%
 Tests (2): 40%
Mid-Term Test:
 Two Part Test, 10 questions each
 Part I, Wednesday; Expressions, Equations,
Integers, Rational Numbers—See Today’s
Class Work
 Part II, Thursday; Absolute Value
Expressions and Equations

4. Will be collected October 11th. All notebook
issues need to be worked out before then
Open Notebook to warm up section

5. 1. (-|4 - 8|)2
1. x + 4 = 11
1. 2x + 4 = 18 2. 3x - 5
= 10
3. 16 - 4|4 - 8| = 22. 5 - |7 - 10|
2. x - 5 = 8 3. 2x = 20 4. x/5 = 6

6. * The same rules to solving equations apply, there are
just more steps to the solution.
1. 10y - (4y + 8) = -20
2. −8z −(2+3z) = 5(z + 3)

7.  When an equation has variables on both sides,
three different results are possible.
 Look at this equation: 2x + 2 = 4 + x
The equation results in a solution of a single number.
In this case, x = 2

8.  3x - 9 = 3x + 10
 A linear equation has NO SOLUTION when the
solved equation has no variable and the equation is
false.
3x - 3x = no variable, -9 = 10

9.  When an equation has variables on both sides,
something else may occur. Solve the equation:
4(x – 5) = 4x - 20
4x -20 = 4x -20; Subtract 4x from the left side and -20 = -20
This is called “identity”. It means ALL REAL
NUMBERS make the sentence true.
A linear equation is an identity when the solved
equation has NO VARIABLE and the solution is TRUE!

10.  When solving equations with variables on both
sides, 3 different things can happen.
1) solution is a single number ( x = 4)
2) solution is ALL REAL Numbers ( IDENTITY)
3) solution is NO SOLUTION (empty set)

11. Warm-Up (5); fr. Test
Version 1
1) .3x + .3 = .6x + .7 - .5x A) .32 B) 15 C) 2 D) .4 E) None
Version 2
Version 3
9) The first stage of a rocket burns 28 seconds longer than
the second stage. If the total burning time for both stages
is 182 seconds, how many seconds does the first stage
burn for?
A) 124 B) 77 C) 98 D) 90 E) 105