exam Maths Puzzle Numerical Ability

Is the inverse of a function always a function? Justify your answer.

I know that it is not always a function but I am not sure why

Read Solution (Total 0)

exam Other Question

If the two given equations are being solved so that one unknown is eliminated by the method of comparison, which step is esential in the following problem.
3x+2y=7
6x-5y=8 why are variables useful in algebra?
What makes the use of variables difficult to understand?

Create one statement in english representing an algebraic relationship.