Imagine that a line on a Cartesian graph is approximately the distance y in feet a person walks in x hours. What does the slope of this line represent?
slope is the speed in feet per hour
the graph is a way to represent diffeent pairs of distances and times
the differnt people walking at different speed have different slopes
a Flat line all the same distance all the time means standing still, [ zero speed
you cannot have a vertical line that would mean being in many places at the same time ]
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