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Interpreting Points on a Function Graph
Worksheet
Grade Level
Grade 8
8.109 Interpreting Points on a Function Graph
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A graph of z(x), where z(x) is elevation relative to the tunnel entrance in meters x tenths of a kilometer into the tunnel, includes the point (7, -28). Which interpretation is correct?
A
0.7 kilometers into the tunnel, the elevation is 28 meters above the entrance.
B
0.7 kilometers into the tunnel, the elevation is 28 meters below the entrance.
C
7 kilometers into the tunnel, the elevation is 28 meters below the entrance.
D
28 tenths of a kilometer into the tunnel, the elevation is 7 meters below the entrance.
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