The Coordinate Plane
Chapter 2, Section 1
Distance Formula in the Coordinate PlaneLet P = (x₁, y₁) and Q = (x₂, y₂) be any two points in the coordinate plane. Then the distance between P and Q, denoted d(P, Q), is given by the distance formulad(P,Q)=√(x₂−x₁)²+(y₂−y₁)²d(P,Q)=√(x₁−x₂)²+(y₁−y₂)²Example 1: a)Find the distance between the points (4√5,5
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b)Find the distance between the points on the graph.
Midpoint of a Line segmentThe midpoint is halfway between the two endpoints.Its x value is halfway between the two x values
