SOLUTION: The length of lines joining A(2,-1) and B (5,y) is 5 - Find Y I'm at the stage: 25=9+(y+1)^2

SOLUTION: The length of lines joining A(2,-1) and B (5,y) is 5 - Find Y I'm at the stage: 25=9+(y+1)^2

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Question 697116: The length of lines joining A(2,-1) and B (5,y) is 5 - Find Y
I'm at the stage:
25=9+(y+1)^2
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
25 = 9 + (y+1)^2
subtract 9 from both sides:
16 = (y+1)^2
take the square root of both sides:
4 = y+1
3 = y

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