Functions Math 8

Front

What is a function?

Back

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

Front

What is the input in a function?

Back

The input is the value you put into the function machine.

Front

What is the output in a function?

Back

The output is the value that comes out of the function machine after applying the rule.

Front

What does the notation f(x) represent?

Back

f(x) represents the output of the function f for the input x.

Front

Is the mapping (1,2), (2,3), (3,4) a function?

Back

Yes, it is a function because each input has exactly one output.

Front

What is the rule in a function?

Back

The rule is the operation or formula that defines how to convert the input into the output.

Front

If the input is 5 and the rule is 2x + 1, what is the output?

Back

The output is 11.

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line and can be expressed in the form y = mx + b.

Front

What is the domain of a function?

Back

The domain is the set of all possible inputs for the function.

Front

What is the range of a function?

Back

The range is the set of all possible outputs of the function.