Pre Alg 7 warm up 12/17 & 12/18

Front

Is this a function? { (-1, 0) (7, 4) (-5, 2) (-1, 5) }

Back

No, because the input -1 is associated with two different outputs (0 and 5).

Front

Is this a function? { (3, 5) (-3, 5) (-1, 2) (6, 6) (2, 9) }

Back

Yes, because each input is associated with exactly one output.

Front

What is a function?

Back

A function is a relation where each input has exactly one output.

Front

What is the range of a relation?

Back

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

Front

What is the range of this relation? { (1, 2), (2, 3), (3, 4), (4, 5) }

Back

{2, 3, 4, 5}.

Front

Is this graph a function? (Graph showing a vertical line intersecting the curve)

Back

Not a Function, because a vertical line intersects the graph at more than one point.

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

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

Back

It means that for every input, there is only one output.

Front

Is this a function? { (1, 2), (1, 3), (2, 4) }

Back

No, because the input 1 is associated with two different outputs (2 and 3).

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers used to represent a point in a coordinate system, written as (x, y).