EM-1999
Cartesian coordinates
E Math · Secondary 4 · Medium · Cartesian coordinates
A graph shows the height of water in a tank, cm, against time, minutes. A point lies on the graph. What does this point represent?
- After 6 minutes, the height of water is 42 cm
- After 42 minutes, the height of water is 6 cm
- When the height is 6 cm, time is 42 minutes
- The average height of the water in 6 minutes is 42 cm
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