Math 1021 Section 2.1 - Math 1021 Section 2.1 Rectangular...

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Math 1021Section 2.1Rectangular CoordinatesThe rectangular or Cartesian coordinate system consists of the x-axis, the y-axisand the origin.Any point P can be located by using anordered pair(x, y) of realnumbers.Distance Formula:The distance between two points P1= (x1, y1) and P2= (x2, y2), denoted by d(P1,P2)is22122121(,)()()d P Pxxyy=-+-The distance formula comes from the Pythagorean theorem.Midpoint Formula:The midpoint M = (x, y) of the line segment from P1= (x1, y1) to P2= (x2, y
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