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Posted by on Monday, January 21, 2013 at 12:56am.

Which of the following is a function?
A) -x^2 + 2y^2 - 4 = 36
B) {(6, -5), (-1, -5), (-4, -5)}
C) {(-5, -4), (-5, -3), (-3, 6)}
D) x = y^2 - 3

  • Algebra II - , Monday, January 21, 2013 at 9:20am

    apply the definition of a function to each and see if it fits.
    e.g. in C ---> (-5,-4) and (-5(-3)
    two different values of y for the same x value, not a function

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