For each relation, decide whether or not it is a function.
Relation 1
Relation 2
Domain Range
Domain Range
h
u
-4
star
r
u
-1
sun
a
w
1
rock
u
w
8
door
2
chair
O Function
Not a function
Relation 3
{(9, -5), (9, 3), (9, 9), (9, -7)}
O Function
Not a function
O Function
Not a function
Relation 4
{(y, -8), (s, 5), (f, -4), (m, 6)}
O Function
Not a function
