Inputs of a Function

Which of the tables represents a function?

• Table A

• Table B

• Both Tables A & B represent functions

• Neither table represents a function

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

What value of m would result in this table representing a function?

• 3

• 6

• 2

• Any value of m would make this a function.

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 of the following represent a function? (Pick 2)

• {(9,-7), (7,-5), (4,-2), (3, -8)}

• {(3,5), (4,6), (5,7), (4,8)}

• {(6,3), (4,9), (-2,-7), (-8,-5)}

• {(-2,0), (0,3), (4,5), (0,7)}

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

Tell me about this table (choose 2):

• It represents a function

• It does NOT represent a function

• Because the x-values repeat

• Because the x-values do NOT repeat

Tell me about this mapping (select 2):

• It represents a function

• It does NOT represent a function

• Because one input (4) results in two outputs (-5 & 0)

• Because two inputs (6 & -3) result in one output (4)