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Distance-time graphs is a
way to visually show a collection of data. It allows us to
undertstand the relationships between the data.
The below is a example of a distancetime graph, the time
Distance-Time for Table 1
As you can
see, the data from the table is shown in a visual format in the
graph. The time(s) is shown as the x axis and the distance(m) is
shown on the y axis on the graph. The points on the graph do not
create a perfectly straight line so a line of best fit must
be drawn in.
|The proper equation for a line is y=mx
The y is the dependant variable (on y -axis)
The x is the independent variable (on x-axis)
The m is the slope of the line
The b is the y intercept of the line.
In a distance-time graph the equation changes
y= mx + b
d = vt
d is the dependant variable, lying on the y axis.
t (time) is the
independant variable and lies on the x axis.
v (speed) is the slope of the line.
0 (the initial distance) is the y intercept.
Continue to the next lesson: ::Acceleration::