Input/Output Functions Graphs

Which of the two relations represents a function?

• top

• bottom

• both

• neither

Which of the two relations represents a function?

• top

• bottom

• both

• neither

Are both of these relations functions?

• yes

• no

Which statement is false?

• if an input is mapped to more than one output then it is a function

• if an input is mapped to only one output then it is a function

• if an output has more than one input mapped to it then it is a function

• if an output has only one input mapped to it then it is a function

Which graphs are relations?

• 4 & 5

• 5 & 3

• 4 & 3

• none

A function is a rule that assigns to each input exactly one output. In a graph, the input is the x-value, and the output is the y-value.

Which graph(s) do not represent a function?

• 
• 
• 
• 
• 

Consider the relation shown in the figure.
Which ordered pairs show that the relation is not a function?

• (0,-2) and (0,1)

• (0,1) and (2,1)

• (1, 2) and (3,4)

• None, because this mapping is a function

Which graphs represent functions?

• Graph B and C only

• Graph B, C and D only

• Graph A only

• All of the graphs represent functions.

Which statement describes the definition of a function?

• For every input, there is exactly one output.

• For every input, there are no more than two outputs.

• For every output, there is exactly one input.

• For every output, there are no more than two inputs.

The 2 tables show a relationship between x and y values. What do the 2 linear functions have in common?

• y-intercept

• x-intercept

• 2 common points

• identical slopes