Answer:
(a) 6 mm
(b) 6 mm/s
Step-by-step explanation:
(a)
The graph starts at (0, 0). That means the height after 1 second will be the amount of increase in 1 second. The graph shows you that height is 6 mm.
The water increases in height by 6 mm for each second it is running.
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(b)
The slope of the line is the ratio of the vertical change to the horizontal change. The answer to part (a) gives you the information you need:
slope = vertical change / horizontal change
slope = (6 mm)/(1 second) = 6 mm/second
The slope of the line is 6 mm/s. (Usually, units are not part of the expected answer.)
