Math help please

posted by .

1. The ordered pairs (1, 1), (2, 8), (3, 27), (4, 64), and (5,125) represent a function. What is a rule that represents this function?

Y = x
Y = 4x
Y = x^2
Y = x^3

I don't know how to solve this please help!

  • Math help please -

    The easy way to do these is to look at it and try each of the answers.
    For example, 2*1 is not 8 for a answer.
    2*4 is 8 and that's ok but 3*4 is not 27.
    For answer c, 2^2 = 4 and that's not ok.
    Finally, 2*^3 = 8 which is ok. Next, 3^3 = 27 and that's ok. Next 4^3 = 64 and that's ok so I'd go with y = x^3. You can check out the last ordered pair to make sure 5^3 = 125.

  • Math help please -

    Well for this problem what you would do is you would take each set of ordered pairs and substitute the x coordinate for x and the y coordinate for y.
    If for all 5 ordered pairs a function works, then that is your answer.

    For example take the first one.

    With the set of coordinates (1,1)...
    the first function would work because 1=1.

    Lets try substituting another pair for the same function. (2,8)
    8=2.

    Since that is not true, you know that this function is not true for all the ordered pairs.

    Try this method for the rest of the functions. I hope this helps!

  • Math help please -

    1) A
    2) A
    3) B
    4) D

    100% correct

  • Math help please -

    thx @YouDon'tKnowMyNameXD

    He/She is right I got 100%

  • Math help please -

    Thank UUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUU!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Patterns and nonlinear functions(Algebra 1)

    The ordered pairs (1,1), (2,8),(3,27),(4,64), and (5,125) represent a function. What is a rule that represents this function?
  2. Algebra

    The ordered pairs (1,1), (2,8), (3,27), (4,64) , and (5,125) represent a function. What is a rule that represents this function?
  3. Algebra

    The ordered pairs (1,6), (2,36), (3,216), (4,1296), and (5,7776) represent a function. What is a rule that represents this function?
  4. algebra. help!

    The ordered pairs (1,2),(2,4),(3,8),(4,16), and (5,32) represent a function?
  5. Math

    The ordered pairs (0,-3), (1,2), (2,7), (3,12) represent a function. What is a rule that represents this function?
  6. ALGEBRA

    the ordered pairs pairs (1,36), (2,49), (3,64). (4,81), and (5,100) represent a function. What is a rule that represents this function y=x^2 y=36x y=(x+5)^2**** y=(x=6)^2
  7. Algebra

    Please check my answer The ordered pairs (0,1), (1, 6),(2, 36), (3, 216), and (4, 1,296) represent a function. What is a rule that represents this function?
  8. Math

    1.Suppose that the function f(x) = 5x + 3 represents the number of cars that drive by in x minutes. How many cars will drive by in 10 minutes?
  9. ALGEBRA1

    The ordered pairs (1, 16), (2, 25), (3, 36), (4, 49), and (5, 64) represent a function. What is a rule that represents this function?
  10. Math

    The ordered pairs (1, 5), (2, 25), (3, 125), (4, 625), and (5, 3125) represent a function. What is a rule that represents this function?

More Similar Questions