System Of Linear Equations

7 Questions
System Of Linear Equations

Solving a system of linear equations with two variables by methods of substitution and elimination and graphically.

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Questions and Answers
  • 1. 
    When solving system of equations , which expression could be substituted for r in the second equation? r = 4 - s3r + 2s = 15                                             
    • A. 

      4 - s

    • B. 

      4 - r

    • C. 

      S - 4.

    • D. 

      4/s

  • 2. 
    Use elimination to solve the system of equations.x + 6y = 10x + 5y = 9
    • A. 

      (1,4)

    • B. 

      (4,1)

    • C. 

      (-1, -4)

    • D. 

      (-4, -1)

  • 3. 
    Use substitution to solve the system of equationsn = 3m - 112m + 3n = 0
    • A. 

      (-2, 3)

    • B. 

      (-3, 2)

    • C. 

      (3, -2)

    • D. 

      (2, -3)

  • 4. 
    Solve the system of equations.Use the video clip as  a guide to apply the method of elimination by addition.6x - 7y = 213x  + 7y = 6
    • A. 

      (-3, 3/7)

    • B. 

      (3, -3/7)

    • C. 

      (7/3, -3)

    • D. 

      (-3, -7/3)

  • 5. 
    • A. 

      (3, 1)

    • B. 

      (1, 3)

    • C. 

      (-2,1)

    • D. 

      (-3, -1)

  • 6. 
    To eliminate the variable y in the system of equations, multiply the second equation by which number?6x + 4y = 222x - y = 1
    • A. 

      3

    • B. 

      9

    • C. 

      22

    • D. 

      4

  • 7. 
    The length of a rectangle is three times the width. The sum of the length and the width is 24 inches. What is the length of the rectangle?
    • A. 

      3 inches

    • B. 

      6 inches

    • C. 

      9 inches

    • D. 

      18 inches