Is It a Function?

Front

Is this mapping a function or not a function?

Back

Not a Function

Front

What is the definition of function?

Back

Every input has only ONE output

Front

Does this mapping diagram represent a function?

Back

Yes, because each input goes to one and only one output

Front

Which set of values is a function? (9,5) (10,5) (9,-5) (10,-5), (3,4) (4,-3) (7,4) (3, 8), (6,-5) (7, -3) (8, -1) (9, 1), (2, -2) (5, 9) (5, -7) (1, 4)

Back

(6,-5) (7, -3) (8, -1) (9, 1)

Front

Does this mapping diagram represent a function?

Back

Yes, because each input goes to one and only one output

Front

What is a function in mathematics?

Back

A relation where each input is associated with exactly one output.

Front

Can a function have the same output for different inputs?

Back

Yes, a function can have the same output for different inputs.

Front

What is the 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

If f(x) = 2x + 3, what is f(2)?

Back

f(2) = 2(2) + 3 = 7

Front

What is the domain of a function?

Back

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