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The Cartesian coordinates in the form of the linear equation y = mx+c is a straight line that can be plotted on a graph where m is the slope and c is the intercept through the y axis.

For example: y = 3x+2 means that 3 is the slope and that 2 is the intercept and when plotted on a x axis and y axis graph will produce a straight line.

The idea of Cartesian coordinates was the brainchild of the French mathematician Rene Descartes in the early 17th century.

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Q: Prove that the equation of a straight line is given by y equals mx plus c .?
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