Flashcard Review Lesson 6.1 & 6.2 Functions (Math 8)

Front

Which graph is linear?

Back

Graph D

Front

All of the x values or inputs are called what?

Back

Domain

Front

Is this a function?

Back

Yes

Front

What is the definition of function?

Back

Every input has only ONE output

Front

Is the relation a function? Why?

Back

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

Front

What is the range in a function?

Back

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

Front

What does it mean for a relation to be a function?

Back

Each input (x-value) must correspond to exactly one output (y-value).

Front

Identify the domain of the function: f(x) = 2x + 3.

Back

All real numbers (since there are no restrictions on x).

Front

What is a vertical line test?

Back

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

Front

What is a linear function?

Back

A function that graphs to a straight line, typically in the form f(x) = mx + b.