Section 4.4 - Solving For A Variable In A Linear Relation

10 Questions | Total Attempts: 162

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Section 4.4 - Solving For A Variable In A Linear Relation - Quiz

Please complete the following questions.


Questions and Answers
  • 1. 
    Solve 3x + 2y = 6 for y in terms of x
    • A. 

      Y = -3/2x + 6

    • B. 

      Y = x + 3

    • C. 

      Y = -3/2x + 3

    • D. 

      Y = -3x + 6

  • 2. 
    Solve 3/4x + 1/2y = 3 for y in terms of x
    • A. 

      Y = -3/2x + 6

    • B. 

      Y = -3x + 3

    • C. 

      Y = -3/2x + 12

    • D. 

      Y = 3x + 3

  • 3. 
    Solve A = (L)(W) for L
    • A. 

      W = A/L

    • B. 

      A = (L)(W)

    • C. 

      L = (A)(W)

    • D. 

      L = A/W

  • 4. 
    Solve P = 2L + 2W for W
    • A. 

      W = P - 2L

    • B. 

      W = (P - 2L) / 2

    • C. 

      W = P - L

    • D. 

      W = L

  • 5. 
    Consider the equation V = LWH.  What inverse operation would you use to solve for W?
    • A. 

      Addition

    • B. 

      Subtraction

    • C. 

      Multiplication

    • D. 

      Division

  • 6. 
    Consider the equation C = 75 + 50t where C represents the cost for a plumer to do a job that takes t hours.  Why might someone want to rearrange the equation so that it is solved for t?
    • A. 

      They want to hire a plumber for 10h

    • B. 

      They want to know how many hours the plumber could work for a certain cost

    • C. 

      They want to know the cost of a job

    • D. 

      They want to hire an electrician for t hours

  • 7. 
    Libby has $1.85 in quarters and dimes.  She has 11 coins in all.  How many of each does she have?
    • A. 

      5 dimes, 6 quarters

    • B. 

      6 dimes, 5 quarters

    • C. 

      2 dimes, 9 quarters

    • D. 

      4 dimes, 7 quarters

  • 8. 
    Farmer Bill has chickens and horses.  He has a total of 30 animals.  There are a total of 80 legs.  Each chicken has 2 legs and each horse has 4 legs.  How many of each type of animal does he have?
    • A. 

      20 chickens and 10 horses

    • B. 

      15 chickens and 15 horses

    • C. 

      10 chickens and 20 horses

    • D. 

      30 chickens

  • 9. 
    If you multiply a number x by n and then add m the result is p.  What is the first inverse operation you should perform to solve this equation for x?
    • A. 

      Multiply by m

    • B. 

      Divide by m

    • C. 

      Add m

    • D. 

      Subtract m

  • 10. 
    If the area of a traingle is 15cm^2, and the height is 6cm, what is the base?
    • A. 

      5 cm

    • B. 

      6 cm

    • C. 

      5/2 cm

    • D. 

      30 cm

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