The graph represents the water level of a tank after an inlet pipe is turned on. y
1
Water Level of a Tank
10
8
6
Water Level (in inches)
X
0
10
2 4 6 8
Time (in minutes)
Two students explain the meaning of points (0,0) and (1,2).
• Kelvin says point (0,0) means the tank is empty when the inlet pipe is turned on.
• Paige says point (1, 2) means the water level of the tank goes up by 2 inches every minute.
Who is correct?
o both Kelvin and Paige
O neither Kelvin nor Paige
O only Kelvin