What Is A Function? | Functions And Their Graphs | Algebra II | Khan Academy


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23 thoughts

  1. My reasoning in my mind for asking the question that I am asking below is that a function definition follows on definitions such as dictionary.com as follows: Mathematics.
    Also called correspondence, map, mapping, transformation. a relation between two sets in which one element of the second set is assigned to each element of the first set, as the expression y = x 2; operator.
    Also called multiple-value function. a relation between two sets in which two or more elements of the second set are assigned to each element of the first set, as y 2= x 2, which assigns to every x the two values y = + x and y = − x.
    a set of ordered pairs in which none of the first elements of the pairs appears twice.

  2. i need to know the name of the speaker for a math essay on functions pleas help as soon as posible

  3. I have two teachers…. and y’know what, you’re better than both of them! (I think, the one I like is exceptionally good and he used to be a professor in a University)

  4. Dear x,
    Stop asking us to find your daughter.
    Shes never coming back

    Signed FlyingHippos_Derp

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