MATH 8 DEC 6 Is the relation a function?

Front

What is a function?

Back

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

Front

Which of the following is not a function? {(0,1), (1,2), (2,3), (3,4)}, {(0,2), (1,3), (4,3), (1,2)}, {(1,3), (4,2), (2,0), (3,4)}, {(1,2), (2,2), (3,2), (4,2)}

Back

{(0,2), (1,3), (4,3), (1,2)}

Front

Which relation is NOT a function? {(1,-5), (3,1), (-5,4), (4,-2)}, {(2,7), (3,7), (4,7), (5,8)}, {(1,-5), (-1,6), (1,5), (6,-3)}, {(3,-2), (5,-6), (7,7), (8,8)}

Back

{(1,-5), (-1,6), (1,5), (6,-3)}

Front

What is the ordered pair for point B? (3, 2), (-3, -2), (-3, 2), (2, -3)

Back

(-3, 2)

Front

Which ordered pair could be added to this relation and make the set NOT a function? {(-9,3) (5,-6) (3, -1) (-6,5) (__?__)}

Back

(-6, -9)

Front

Is this set of ordered pairs a function or not a function? {(1,2), (2,3), (1,4)}

Back

Not a Function

Front

What is an ordered pair?

Back

An ordered pair is a pair of numbers (x, y) that represent a point in a coordinate system.

Front

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

Back

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

Front

If a relation has two pairs with the same first element but different second elements, is it a function?

Back

No, it is not a function.

Front

What is the vertical line test?

Back

A method to determine if a relation is a function by checking if a vertical line intersects the graph at more than one point.