function or not a function

Front

What is a function?

Back

A function is a relation that assigns exactly one output for each input.

Front

What is NOT a function?

Back

A relation where an input can have multiple outputs.

Front

What does the vertical line test determine?

Back

It determines if a graph represents a function.

Front

Evaluate f(-2) if f(x) = x + 3.

Back

f(-2) = 1.

Front

If f(x) = 2x + 1, what is f(1)?

Back

f(1) = 3.

Front

What is the domain of a function?

Back

The set of all possible input values (x-values).

Front

What is the range of a function?

Back

The set of all possible output values (y-values).

Front

What is a linear function?

Back

A function that graphs to a straight line.

Front

What is a quadratic function?

Back

A function that can be expressed in the form f(x) = ax² + bx + c.

Front

What is an example of a function?

Back

f(x) = x + 2.