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HM
Houghton Mifflin Harcourt Algebra 1, 2015
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3. Solving Linear Systems by Adding or Subtracting
1. Quantitative Reasoning
p. 4-34
7 Subchapters
2. Algebraic Models
p. 36-82
10 Subchapters
3. Functions and Models
p. 86-124
8 Subchapters
4. Patterns and Sequences
p. 126-160
8 Subchapters
5. Linear Functions
p. 164-192
7 Subchapters
6. Forms of Linear Equations
p. 194-242
9 Subchapters
7. Linear Equations and Inequalities
p. 244-272
8 Subchapters
8. Multi-Variable Categorical Data
p. 276-302
6 Subchapters
9. One-Variable Data Distributions
p. 304-348
8 Subchapters
10. Linear Modeling and Regression
p. 350-382
7 Subchapters
11. Solving Systems of Linear Equations
p. 386-426
8 Subchapters
12. Modeling with Linear Systems
p. 428-458
7 Subchapters
13. Piecewise-Defined Functions
p. 460-500
9 Subchapters
14. Rational Exponents and Radicals
p. 504-524
6 Subchapters
15. Geometric Sequences and Exponential Functions
p. 526-576
9 Subchapters
16. Exponential Equations and Models
p. 578-626
9 Subchapters
17. Adding and Subtracting Polynomials
p. 630-660
7 Subchapters
18. Multiplying Polynomials
p. 662-692
8 Subchapters
19. Graphing Quadratic Functions
p. 696-732
7 Subchapters
20. Connecting Intercepts, Zeros, and Factors
p. 734-766
8 Subchapters
21. Using Factors to Solve Quadratic Equations
p. 770-804
7 Subchapters
22. Using Square Roots to Solve Quadratic Equations
p. 806-856
9 Subchapters
23. Linear, Exponential, and Quadratic Models
p. 858-894
7 Subchapters
24. Functions and Inverses
p. 898-942
9 Subchapters
Finish the assignment
Start
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Explore
p. 405-409
9 Solutions
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p. 409
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Elaborate
p. 409
3 Solutions
10
p. 409
11
p. 409
12
p. 409
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Evaluate: Homework and Practice
p. 410-412
26 Solutions
1
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p. 412
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p. 412
Lesson Performance Task
p. 412
Continue to next subchapter
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Exercise
22
Page
411
Page
411
Hint & Answer
Solution
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Thinking
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Hints
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A
a
Does 4=4 depend on any variable to be a true statement?
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B
b
How many values of the x-variable make x=4 a true statement?
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C
c
Is the statement 0=4 true or false? Does it depend on any variable?
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Check the answer
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A
a
Infinitely many solutions
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B
b
One solution
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C
c
No solutions
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Practice makes perfect
Practice exercises
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Solving Systems of Equations by Elimination
Level 1 exercises - Solving Systems of Equations by Elimination
Level 2 exercises - Solving Systems of Equations by Elimination
Level 3 exercises - Solving Systems of Equations by Elimination
Subchapter links
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Explore
p.405-409
1
2
3
4
5
6
7
8
9
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Elaborate
p.409
10
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Evaluate: Homework and Practice
p.410-412
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Evaluate: Homework and Practice
17
(Page 410)
Evaluate: Homework and Practice
18
(Page 411)
Evaluate: Homework and Practice
19
(Page 411)
Evaluate: Homework and Practice
20
(Page 411)
Evaluate: Homework and Practice
21
(Page 411)
Evaluate: Homework and Practice
22
(Page 411)
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25
Evaluate: Homework and Practice
Lesson Performance Task
(Page 412)
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