The variable plotted along the vertical axis is the distance in the first case, speed in the second.
The gradient of (the tangent to) the distance-time graph is the speed while the area under the curve of the speed-time graph is the distance.
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Not greatly. To graph an inequality, you start off graphing the corresponding equality. It is only then that you select one side or the other (with or without the graph itself), as the region of interest.
A graph can be more useful for making presentations because it is more visual, and it can be easier to recognize a pattern in a graph for the same reason. However, a graph doesn't have any more data than a table with the same data.
A-If there exists a vertical line that intersects the graph at exactly one point, the graph represents a function.B-If there exists a vertical line that intersects the graph at exactly one point, the graph does not represent a function. C-If there exists a vertical line that intersects the graph at more than one point, the graph represents a function.-DIf there exists a vertical line that intersects the graph at more than one point, the graph does not represent a function
One line can have only one slope. It is possible to draw more than one line on a single graph, however.
because the z axis represents "depth", you wouldn't see the 6 "places" unless you turned the graph askew.