Answer to Question #126496 in Analytic Geometry for Deborah

Question #126496
1. Calculate the distance between the following pairs of points:
a. (3,4), (5,2)
b. (0,6), (4,0)

2. Calculate the distance between the points (b,3) and (-b,2).
1
Expert's answer
2020-07-20T17:04:57-0400

The distance between two points (x1,y1) and (x2,y2) is (x2x1)2+(y2y1)2.(x_1,y_1)\text{ and }(x_2,y_2)\text{ is }\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}. Using this distance formula we obtain:

1.a. The distance between (3,4) and (5,2) is (53)2+(24)2=4+4=8=22.\sqrt{(5-3)^2+(2-4)^2}=\sqrt{4+4}=\sqrt{8}=2\sqrt{2}.

b. The distance between (0,6) and (4,0) is 42+62=16+36=52=213.\sqrt{4^2+6^2}=\sqrt{16+36}=\sqrt{52}=2\sqrt{13}.

2. The distance between the points (b,3) and (b,2) is (bb)2+(23)2=4b2+1.(b,3)\text{ and }(-b,2)\text{ is } \sqrt{(-b-b)^2+(2-3)^2}=\sqrt{4b^2+1}.




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