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What chart uses parallel lines to show the data?
Number lines
What are conour lines?
Contour lines are used when you have spatial data, with the x,y values identifying a particular point and z is the value at that point. It could be elevation above sea level, temperature, pressure or any other measurable property. Contour lines identify where the data suggests equal values should exist. On an elevation map, contour lines show the elevation of equal values points. A 50 ft contour line would go through all points where the data suggest should be at 50 ft elevation. See related links.
Why the points in a line graph are connected?
because it show the period of time of something
How do you show that two points are parallel to two other points?
Points cannot be parallel to other points. A straight line joining two points is parallel to a straight line joining another pair of points if the gradient (slope) of the two lines is the same.
What is the name of a graph with points plotted to show a possible relarionship bettween two sets of data?
The graph is called the 'line of best fit'
