1) The document provides homework assignments and notes from Lesson 5-1 on solving inequalities and graphing their solutions on a number line. Key steps are to isolate the variable and determine whether to fill in or leave open the circle on the number line based on < or > symbols.
2) Examples are given to solve inequalities algebraically and graph their solutions, including problems defining a variable to represent an unknown number.
3) Students are assigned problems from sections 5.1 and 5.2 due on Monday for extra credit on Chapter 4 test.
The following presentation shows a brief method to verify if given points are solutions or not of quadratic inequalities.
Also, we have the process to graph a quadratic inequality with its corresponding solution set.
The idea is to have a clear method to graph a quadratic inequality using the equivalent quadratic equation, as an alternative method.
The following presentation shows a brief method to verify if given points are solutions or not of quadratic inequalities.
Also, we have the process to graph a quadratic inequality with its corresponding solution set.
The idea is to have a clear method to graph a quadratic inequality using the equivalent quadratic equation, as an alternative method.
1. Lesson 51.notebook December 13, 2012
Assignment:
1>L5.1, pg. 286, #16, 9, 1223, 3031 Due Monday (12/17)
2>L5.2, pg. 293, #230 (evens) Due Monday (12/17)
3>Chapter 4 test signed for extra credit
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2. Lesson 51.notebook December 13, 2012
Lesson 5.1 WarmUp:
Write an equation in pointslope form for the line that
passes through each point with the given slope.
1) (5, 3), m = 7
Write each equation in standard form.
2) y 10 = 2(x 8)
3) 2y + 3 = 1/3(x 2)
Write each equation in slopeintercept form.
4) y 11 = 3(x + 4)
5) y + 4 = 3(3x + 3)
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3. Lesson 51.notebook December 13, 2012
Lesson 5.1:
*To solve inequalities...use the same "steps" that you would for solving
equations...
*ISOLATE the variable
*To "undo" addition subtract
*To "undo" subtraction add
*For < or >...do NOT fill in the circle on the graph
*For < or >...DO fill in the circle on the graph
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4. Lesson 51.notebook December 13, 2012
*Key phrases:
at most... <
no more than... <
at least... >
no less than... >
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5. Lesson 51.notebook December 13, 2012
Lesson 5.1 examples:
Solve each inequality. Then graph the solution on a number line.
A) x 5 > 7
B) 12 < p + 8
10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10
C) 9 + g > 10
10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 10
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6. Lesson 51.notebook December 13, 2012
Define a variable, write an inequality, and solve each problem. Check your
solution.
D) A number increased by 8 is at least 12.
E) A number decreased by 10 is no more than 5.
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