Is it a function?

Front

What is a function?

Back

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

Tags

CCSS.8.F.A.1

Front

Does the relation {(1,5),(1,7),(3,9),(4,11)} represent a function?

Back

No, because the input 1 has two different outputs (5 and 7).

Tags

CCSS.8.F.A.1

Front

What is the range of a function?

Back

The range is the set of all possible output values (y-values) of a function.

Front

What is the domain of a function?

Back

The domain is the set of all possible input values (x-values) of a function.

Front

Can a function have the same output for different inputs?

Back

Yes, a function can have the same output for different inputs, as long as each input has only one output.

Tags

CCSS.8.F.A.1

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers (x, y) that represents a point on a graph.

Tags

CCSS.5.G.A.1

Front

If a relation has the ordered pairs (2, 3), (3, 4), (4, 5), is it a function?

Back

Yes, because each input has exactly one output.

Tags

CCSS.8.F.A.1

Front

What happens if a relation has two ordered pairs with the same first element but different second elements?

Back

It is not a function, because one input cannot have multiple outputs.

Tags

CCSS.8.F.A.1

Front

What is the vertical line test?

Back

The vertical line test is 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

Which of the following is a function: {(1,2), (2,3), (3,4)} or {(1,2), (1,3), (2,4)}?

Back

{(1,2), (2,3), (3,4)} is a function; {(1,2), (1,3), (2,4)} is not.

Tags

CCSS.8.F.A.1