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Find the coordinates for D if E is the midpoint of CD for C( -3,4) and E ( 0,1) 0 votes

E is the midpoint of CD and find the coordinates of D

distance-between-pointsmid-pointaskedNov 21, 2013in GEOMETRYby skylarApprentice


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Please log in or register to add a comment. Please log in or register to answer this question. 1 Answer 0 votes

Let coordinates of D = (x,y)

Midpoint of CD = (0, 1)

(0, 1) = <(x-3)/2, (y+4)/2>

(x-3)/2 = 0 and (y+4)/2 = 1

x-3 = 0 y+4 = 2

x =0+3 y = 2-4

x = 3 y = -2

Coordinates of D = (3,-2)

C(-3,4) D(3,-2)

Distance between CD =√((3+3)^2+(-2-3)^2)

CD =√(36+25)

CD=√61

Coordinates of D = (3,-2) and distance between CD = √61

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