SOLUTION: I have a worksheet called dot to dot distance. Using the given grid and the starting point A(2,9), connect the points A through H in alphabetical order. I know how to put the poin

Question 155114: I have a worksheet called dot to dot distance. Using the given grid and the starting point A(2,9), connect the points A through H in alphabetical order. I know how to put the points on the grid. My problem I am working is...plot point B(5,y) where AB=square root sign with 34 inside and y >9. My computer does not have the square root sign. Thank you for your help and I need to see how you got the answer so I can then do the other 6.
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Distance between two points:
http://www.purplemath.com/modules/distform.htm

.
In your problem, it states:

This is the "distance" (d) between points A and B.
.
Your two points:
A(2,9)
B(5,y)
.
Plug the above into the distance formula:

squaring both sides we get:

.
Taking the square root of both sides. Here, notice that there are TWO different paths you can take -- sqrt(5) can equal -5 or +5. If you chose the -5 route, y would NOT greater than 9. Therefore, choose the +5 route:
.

(this is your answer)
.
Reference: If we had taken the -5 route, you would have gotten:

y is NOT >9 -- toss out solution.

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