Intro to Functions (Algebra 1)

Front

Is this relation a function?

Back

Yes, because all the x-values are different.

Front

What is the range of the following relation: (9, -2) (4, 3) (8, 10) (-4, 8)?

Back

-2, 3, 8, 10.

Front

Is this a function or not?

Back

Not a Function.

Front

All of the y values or outputs are called what?

Back

Range.

Front

Is the relation a function? Why?

Back

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

Front

What is a function?

Back

A relation where each input (x-value) has exactly one output (y-value).

Front

What is the domain of a function?

Back

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

Front

What is the vertical line test?

Back

A method to determine if a relation is a function; if a vertical line intersects the graph at more than one point, it is not a function.

Front

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

Back

Each output (y-value) is paired with exactly one input (x-value).

Front

What is an example of a function?

Back

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