Question 196888
(-8,-2),(-5,k)
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distance=sqrt((x[2]-x[1])^2+(y[2]-y[1])^2)
sqrt((-5+8)^2+(k+2)^2))=3sqrt(5)
sqrt(9+k^2+4k+4)=3sqrt(5)
k^2+4k+13=9*5 Square each side.
k^2+4k-32=0
(k+8)(k-4)=0
k=-8, k=4
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Ed