When points are marked on a graph, a line is often drawn across the dots plotted. A line of best fit is a straight line that goes through as many of such points as possible.
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the line of best fit a line that you draw through your graph that divides all of the points on your scatter plot evenly
a line graph will join all of the points yet a best fit graph will only join the dots which follow the pattern.
The line that minimized the sum of the squares of the diffences of each point from the line is the line of best fit.
No.
yes
Because ever line is different and you can only read off your line in the graph.