November 9, 2015
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Transcript of November 9, 2015
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New Khan Topics Today:
Review for Thursday’s Test Complete CW 2.2
November 9, 2015
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Schedule for the week:
Grade Trackers out Please:
Next slide
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Topics for Week Ending Nov. 15th :
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Test #1, 2nd Quarter: Thursday, Nov. 12th
|Absolute Value| Expressions & Equations: (4)
Adding/Subtracting Integers: (2)
Order of Operations:(2) Equations/Equation
Applications: (2)
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Chart of the Week:
I have no idea
This is easy
Practice Problems Section of
Notebook
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3
space
1
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2. A 150 mile trip at 60 mph, would take how long?
Test Review:
(n – 3) = -3A. Equations/Applications
B. |Absolute Value| Expressions & Equations - 1|- 10|- 2|𝟐
𝟓|- 10|- 2|
𝟓|- 20𝟓 = 2
n = -21
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Know The Rules:|x|= 1
2x = 6; x = 3
2x = -16; x = -8
The two equations are:1. |2x + 5| = 11 2. |2x + 5| = - 11
Test Review/Absolute Value Equations
x = 1, -1Rule: Because the value inside could be positive or negative, two equations must be written and solved.Solve:|2x + 5| = 11
Graphed, the solutions are:Plug back in to check:
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Solve:
Solve 53x + 6 =+ 2
Subtract 6 from each side.53x + = 4–
The absolute value of a number is never negative. So, there are no solutions.
9t + 5 = - 3–4
Decide if an equation has any solutionsAre there any solutions?
What’s the next step?
That decision cannot be made until the absolute value is isolated.Continue:
t = 8 t = -9
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Last Practice Problem:
3. Write the two equations next
1. Is the absolute value isolated?
4. Solve each equation separately
2. Is the right side positive?
a. b. Use your fraction rules to solve
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Today: Work on CW 2.2
Tomorrow: Review Adding/Subtracting
Integers Review Order of Operations CW 2.2 due @ beginning of class