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Algebra 1 6-2 Solving Systems Using Substitution
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4.5 (1 rating)
by Matthew Richardson
| 27 Questions
Note from the author:
A complete formative lesson with embedded slideshow, mini lecture screencasts, checks for understanding, practice items, mixed review, and reflection. I create these assignments to supplement each lesson of Pearson's Common Core Edition Algebra 1, Algebra 2, and Geometry courses. See also mathquest.net and twitter.com/mathquestEDU.
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10 pts
Solve It! A board game allows players to trade game pieces of equal value. The diagram shows two fair trades. The hotel is worth $2400. How much is a car worth? Use a dollar sign in your response and enter only the amount.
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Problem 1 Got It?
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Problem 2 Got It? What is the solution of the system? Use substitution. Show your work.

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Problem 2 Got It? Reasoning: In your first step in the previous item, which variable did you solve for? Which equation did you use to solve for the variable?
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Problem 3 Got It?
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Problem 4 Got It?
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Please follow the directions to solve each system using substitution before checking your work by graphing using the embedded Desmos graphing calculator below.
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Analysis: For the given system, tell which equation you would first use to solve for a variable in the first step of the substitution method. Explain your choice.

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Analysis: For the given system, tell which equation you would first use to solve for a variable in the first step of the substitution method. Explain your choice.

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True or False: Tell whether the statement is true or false. Explain.

When solving a system using substitution, if you obtain an identity, then the system has no solution.

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True or False: Tell whether the statement is true or false. Explain.

You cannot use substitution to solve a system that does not have a variable with a coefficient of 1 or -1.

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Review Lesson 6-1: Solve each system by graphing. You may use the embedded Desmos graphing ulitity above. Identify the solution(s) and number of solutions of each system. Some labels may not be used.

  • System A
    Answer by dragging items here
  • System B
    Answer by dragging items here
  • System C
    Answer by dragging items here
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10 pts
Review Lesson 5-6: Find the slope of a line perpendicular to the graph of each equation.
  • y = 3x
    Answer by dragging items here
  • y = -(1/4)x
    Answer by dragging items here
  • (1/3)x - y = 2
    Answer by dragging items here
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10 pts
Review Lesson 2-4: Solve the equation. Check your answer. Enter only a number for your response.

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Review Lesson 2-4: Solve the equation. Check your answer. Enter only a number for your response.

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Review Lesson 2-4: Solve the equation. Check your answer. Enter only a number for your response.

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Vocabulary Review: Classify each expression based on whether or not it contains a variable.
  • Contains a variable
    Answer by dragging items here
  • Does not contain a variable
    Answer by dragging items here
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Vocabulary Review: Classify each equation based on whether or not the variable is isolated.
  • The variable is isolated
    Answer by dragging items here
  • The variable is not isolated
    Answer by dragging items here
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10 pts
Use Your Vocabulary: Complete the statement with the appropriate form of the word substitution.

ADJECTIVE: "We had a __?__ teacher in social studies today."

Enter a one-word response.
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Use Your Vocabulary: Complete the statement with the appropriate form of the word substitution.

NOUN: "The coach made a __?__ of one player for another."

Enter a one-word response.
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10 pts
Use Your Vocabulary: Complete the statement with the appropriate form of the word substitution.

VERB: "The coach made a __?__ of one player for another."

Enter a one-word response.
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10 pts
Reflection: Math Success
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