A relation machine accepts
xvalue numbers, performs the operation
indicated by the relation, and spits out the yvalue
answer. Given the following relation machines,
find the yvalues that will be spit from the
machine and determine if the relation is actually a
function for the xvalues given.
Feed in these xvalues 
Spit out the yvalue
answers 
Is it a function for these
xvalues? 
1. x = 3, 2,
1, 0, 1, 2, 3 
y = 


Feed in these xvalues 
Spit
out the yvalue answers 
Is it a
function for these xvalues? 
2.

y
= 

Feed in these xvalues 
Spit out the yvalue
answers 
Is it a function for these
xvalues? 
3. x = 2, 1,
0, 2, 7 
y = 

Feed in these xvalues 
Spit out the yvalue
answers 
Is it a function for these
xvalues? 
4. x = 4, 8,
13, 20 
y = 

