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