Functions Mappings Tables and Coordinate Pairs

When deciding whether a relation represents a function.....

• x and y values cannot repeat

• x values cannot repeat

• y values cannot repeat

• x and y values can repeat

Which of the following tables does NOT represent a function?

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Which of the following mappings represents a function?

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Which mapping represents a function?

• Mapping A

• Mapping B

• Both Mapping A and Mapping B represent functions

• Neither Mapping represents a function

A function is a relation in which each _________ is paired with _____ _________.

• y-value.... two x-values

• x-value.... two y-values

• y-value.... one x-value

• x-value.... one y-value

Which value of w would allow these coordinates to represent a function?

• -3

• -5

• 6

• 0

This mapping does not represent a function.

Why not?

• Because two inputs (-3 & -2) result in the same output (7)

• Because one of the inputs (-3) can result in two outputs (5 & 6)

• Because the arrows don't cross

• Because the inputs are negative put the outputs are positive

Which tables represent functions? (Select 2)

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Does this mapping represent a function?

• No, because two inputs map to 0

• No, because two inputs map to 1

• Yes, because 0 maps to 0 and 1 maps to 1

• No, because the inputs can result in more than one output

What value of b would make this set of coordinates NOT a function?

• -7

• -3

• 4

• 6