Functions, Functions, Functions

Front

What is the domain of the function {(0,1), (1,-3), (2,-4), (-4,1)}?

Back

D: {0, 1, 2, -4}

Front

What is the range of the function {(0,1), (1,-3), (2,-4), (-4,1)}?

Back

R: {1, -3, -4}

Front

What is the definition of a function?

Back

Every input has only ONE output.

Front

Is the graph of the relation {(0,1), (1,-3), (2,-4), (1,0)} a function?

Back

Not a Function.

Front

Is the relation {(11,2), (11,3)} a function? Why?

Back

No, because the x-value 11 has two y-values paired with it.

Front

What are all of the x values or inputs called?

Back

Domain.

Front

What are all of the y values or outputs called?

Back

Range.

Front

What is a 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

What is an example of a function?

Back

f(x) = 2x + 3, where each x has a unique y.

Front

What is a non-example of a function?

Back

y = x^2 and y = -x^2, where the same x can produce multiple y values.