9th Grade Algebra

Functions can only take on integer values

Functions can be represented by graphs or equations (correct)

Functions can only be used in algebra and not in other areas of math

Functions can only have one input and one output

A relation can only have one input and one output, while a function can have multiple inputs and outputs

A relation can only be represented by an equation, while a function can only be represented by a graph

A function can only have one input and one output, while a relation can have multiple inputs and outputs (correct)

A function and a relation are the same thing

x^2 + y^2 = 1

y = x^2 + 1 (correct)

y = |x|

y = 2x + 3 and y = -2x + 3