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    Injective,Surjective and Bijective Functions HL Rachael5

    How do you prove that a function is bijective or not, injective or not and surjective or not?

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      aine.duffy.9

      Injective are generally straight lines, where there's only one x value for every y value. Subjective is generally quadratic,Cuba etc where there more than one y value for every x, and visa versa! Bijective is a mixture of the 2. The function may start off as quadratic, but then shoot up exponentially - which makes it injective!

      V bad at explaining, hope that helps though!

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