Question

what is a function?

Answer 1

A Function is an equation that for every value of x, there is only one value of y. This can be tested using the vertical line test.

Answer 2

example?

Answer 3

y=x is a function. Anything that does have more than one value of y for every x is a relation.

Answer 4

how to identify a function?

Answer 5

@Henry.Lister

Answer 6

Vertical line test, as I said. Draw a vertical line and at all points it should only touch the graph once.

Answer 7

ok