In a mapping diagram of the relation shown, how many outputs have more than one line?

x y
8 11
10 8
9 9
13 13
11 6
12 5

none

one

two

three

Question

In a mapping diagram of the relation shown, how many outputs have more than one line? 

x	y
8	11
10	8
9	9
13	13
11	6
12	5


 none

 one

 two

 three

anonymous · Answer

please someone help me i really really need it i have no idea what to do

anonymous · Answer

can anyone please just help me

anonymous · Answer

A function takes inputs (Xs) and maps them to outputs (Ys).
An ordered pair like (3,2) says that the function takes the input 3 and maps it to the output of 2. A rule of functions is that no input can get mapped to two outputs. So I can't have the ordered pair (3,1) and (3,2).
However, two inputs can get mapped to the same output! =D So for example, if 2 and 10 both got mapped to 5, I would have the ordered pairs (2,5) and (10,5).

anonymous · Answer

what is the awnswer?

anonymous · Answer

a,b,c,d???

anonymous · Answer

Now a mapping diagram shows your inputs on one side and your outputs on the other, then draws lines to show what gets mapped to what. Like this:
|dw:1334343850017:dw|