3 A candle is 32 centimeters tall and burns for 6 hours.
Its height is a linear function represented in the graph.
What is the rate at which the height of the candle changes?
A -4 centimeters per hour
per hour
B-centimeter
с
D
centimeter per hour
4 centimeters per hour
Ben chose D as the correct answer. How did he get
that answer?
Ben chose D because
far an online
Height (cm)
Is the rate of change
positive or negative?
32
28
24
20
16
12
8
4
0 1 2 3 4 5 6 7 8
Time (hours)