Function or not

Front

What is a function?

Back

A function is a relation where every input has exactly one output.

Front

What is the definition of 'not a function'?

Back

A relation is not a function if at least one input has more than one output.

Front

Is the mapping {(1, 2), (1, 3)} a function or not a function?

Back

Not a Function

Front

Is the mapping {(1, 2), (2, 3)} a function or not a function?

Back

Function

Front

What is the vertical line test?

Back

A method to determine if a graph represents a function; if a vertical line crosses the graph more than once, it is not a function.

Front

Is the graph of y = x^2 a function or not a function?

Back

Function

Front

Is the graph of y = √x a function or not a function?

Back

Function

Front

Is the graph of y = ±√x a function or not a function?

Back

Not a Function

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers used to represent a point in a coordinate system, written as (x, y).

Front

What does it mean for a function to be one-to-one?

Back

A function is one-to-one if each output is produced by exactly one input.