3. Kayla earns $6 per hour babysitting. Use the graph below to determine whether the amount of money Kayla earns is proportional to the number of
hours she babysits.
y
36
30
Earnings ($)
24
18
12
6
OB. not proportional; the graph
is not a straight line
0 1 2 3 4 5 6
OA. not proportional; the graph is a
straight line but the rate of
change is not constant
OC. proportional; the graph is a
straight line through the origin
OD. not proportional; the graph
is a straight line, but does
not pass through the origin