Expressions, Equations, Functions, & Relations

26 Questions | Total Attempts: 1286

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Expressions, Equations, Functions, & Relations

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Questions and Answers
  • 1. 
    The expression "four less than a number" is the same as which of the following?
    • A. 

      4-x

    • B. 

      X-4

  • 2. 
    Four times the sum of nine and a number
    • A. 

      4(9 + n)

    • B. 

      4 x 9 + n

    • C. 

      4 + n + 9

    • D. 

      4n + 9

  • 3. 
    Three times Cassie's age increased by nine is twelve.
    • A. 

      3x+12 - 9

    • B. 

      3x + 9=12

    • C. 

      3x + 12 = 9

    • D. 

      3x + 5

  • 4. 
    Brett got on an elevator and rode up 10 floors.  Next he rode down 7 floors.  After that he went up 4 floors.  Finally he went down 6 floors.  When he got off the elevator he was on the 11th floor.  What floor was he on when he started his ride?
    • A. 

      8th floor

    • B. 

      9th floor

    • C. 

      10th floor

    • D. 

      12th floor

  • 5. 
    Sara and Kim together have  15 pencils.  Sara has 9  pencils. Mark and Kim together have 10 pencils.  How many pencils does Mark have?
    • A. 

      5

    • B. 

      34

    • C. 

      8

    • D. 

      4

  • 6. 
    What is the algebraic expression for "a number f decreased by 18"?
    • A. 

      18f

    • B. 

      F + 18

    • C. 

      F - 18

    • D. 

      18 + f

  • 7. 
    The coefficient of x when you have 1.55x is.....
    • A. 

      1.00

    • B. 

      0.55

    • C. 

      1.55

    • D. 

      155

  • 8. 
    The coefficient of y when you have 22y/9 is.....
    • A. 

      1/9

    • B. 

      22/9

    • C. 

      22

  • 9. 
    A FUNCTION is a "special" type of ____________. 
  • 10. 
    The PURPOSE of a Function and Relation is to explain how something works and what is happening! It describes what is happening using NUMBERS (that don't change) and VARIABLES (that can change). 
    • A. 

      True

    • B. 

      False

  • 11. 
    Which (variable) do MATH BOOKS often use instead of "f(x)"? This (variable) and f(x) mean the same thing!!!Example: f(x) = x + 6  can also be written as (variable) = x + 6
  • 12. 
    If you have the Function....Juggling (S) = 3 balls X _____  , where S =  # of secondsWhat variable should you put in the blank?!?
  • 13. 
    Is this true or false?A FUNCTION is a SPECIAL TYPE of RELATION. A RELATION is not always a FUNCTION. 
    • A. 

      True

    • B. 

      False

  • 14. 
    Check ALL the answers that are TRUE!Why did your classmates do weight lifting and Mr.Morehead juggle balls in class?
    • A. 

      So I could learn how to "describe a situation" using numbers and variables

    • B. 

      To help me understand the Purpose of a Function is to explain how something works!

    • C. 

      So I could decide what INPUT, OUTPUT, and VARIABLES to use so my Function is easy to understand

    • D. 

      Because Mr.Morehead used to be in a juggling circus

  • 15. 
    Steve had x dollars in his bank account and then he deposited $10 each week for 3 weeks.  His total amount of money in the bank is now $70.  What is x? ( How much money did he have to start?)
    • A. 

      $60

    • B. 

      $20

    • C. 

      $40

  • 16. 
    What is the difference between an expression and an equation?Pick ONE answer
    • A. 

      They are the same thing.

    • B. 

      An equation has an equal sign, but an expression does not.

    • C. 

      An equation has more numbers and an expression has more variables.

  • 17. 
    What does 25k mean?
    • A. 

      25 added to k

    • B. 

      The difference between k and 25

    • C. 

      The product of 25 and k

  • 18. 
    The sum of three and twenty-two, divided by the number a
    • A. 

      (3 + 22) / a

    • B. 

      A / (3 + 22)

    • C. 

      3 + 22 / a

  • 19. 
    Fill in the blank with the correct word!A _________ is a letter that represents a number(of something).Hint: the answer has 8 letters
  • 20. 
    Please fill in the answer below...The ____________ of a variable is the number in front of the variable.Hint: the answer has 11 letters
  • 21. 
    Translate from an English expression into an Algebraic expression:a decreased by 17***answer with NO SPACES***  Example: x+5
  • 22. 
    Translate from an English expression into an Algebraic expression:the ratio of m and n***answer with NO SPACES***  Example: x+5
  • 23. 
    Translate from an English expression into an Algebraic expression:8 less than the sum of a and b***answer with NO SPACES***  Example: x+5***HINT...don't forget the ()
  • 24. 
    Why is a Function so useful when you are trying to understand a situation?Pick only one of the following answers
    • A. 

      A Function gives us an "EXACT" answer for every input!

    • B. 

      A Function describes what is happening using "numbers" that don't change and "variables" for the things that can change.

    • C. 

      Both of the above answers are CORRECT!!!!!!!!!!!!!!!!!!

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