SOLUTION: Point A has coordinates (4,2). the x-coordinate of point B is 10. The distance between point A and point B is 10 units. Your friend says the coordinates of point B could be (12, 8)

Algebra ->  Triangles -> SOLUTION: Point A has coordinates (4,2). the x-coordinate of point B is 10. The distance between point A and point B is 10 units. Your friend says the coordinates of point B could be (12, 8)      Log On


   

Question 965302: Point A has coordinates (4,2). the x-coordinate of point B is 10. The distance between point A and point B is 10 units. Your friend says the coordinates of point B could be (12, 8). What are the possible coordinates of point B?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use the distance formula and don't listen to your friend.
D%5E2=%28x%5B1%5D-x%5B2%5D%29%5E2%2B%28y%5B1%5D-y%5B2%5D%29%5E2
10%5E2=%284-10%29%5E2%2B%282-y%29%5E2
100=36%2B%282-y%29%5E2
%282-y%29%5E2=64
2-y=+0+%2B-+8
y=2+%2B-+8
y=-6 and y=10
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