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32 votes
Find the coordinates of the center C of a circle if the endpoints of itsdiameter are A(8,-4) and B(-3, 2).C(x, y) =

User RVA
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1 Answer

8 votes
8 votes

C(2.5,-1)

Step-by-step explanation

Step 1

if the points A and B are the endpoints of the diameter, we can find the midpoint to find the coordiantes of the center, the midpoint of P1 and P2 is given by:


\begin{gathered} \text{midpoint}=((x_1+x_2)/(2),(y_1+y_1)/(2)) \\ \text{ where} \\ P1(x_1,y_1) \\ P2(x_2,y_2) \\ \end{gathered}

Let

P1=A(8,-4) P2=(-3,2)

midpoint C

Step 2

replace


\begin{gathered} \text{c}=\text{midpoint}=((x_1+x_2)/(2),(y_1+y_1)/(2)) \\ \text{midpoint}=((8-3)/(2),(-4+2)/(2)) \\ \text{midpoint}=((5)/(2),\frac{-2_{}}{2}) \\ \text{midpoint}=(2.5,-1) \\ \end{gathered}

so, the answer is C(2.5,-1)

User Ted Spence
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2.9k points