Function or Not?

Front

Is this graph a function or not a function?

Back

Function

Front

Is this set of ordered pairs a function and how can you tell?

Back

No it isn't a function because an x value repeats but has different y values.

Front

Does the graph represent a function?

Back

No, because the vertical line test shows there are repeating input values.

Front

What is the definition of function?

Back

Every input has 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

What is the vertical line test?

Back

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

Front

What is an ordered pair?

Back

A pair of numbers (x, y) that represent a point on a graph.

Front

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

Back

A function is one-to-one if each output is produced by exactly one input.

Front

Give an example of a function.

Back

f(x) = 2x + 3 is a function because each x value has a unique y value.