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April 25, 2015

Homework Help: Algebra

Posted by Lyn on Monday, June 20, 2011 at 10:54pm.

Find the possible values of a, if the distance between the points is 5, and the coordinates are (1,1) and (4,a)

I'm not quite sure how to do this one.. I've tried the distance and midpoint formula, but I'm confused.

I don't what to do with the (a-1)^2 part.

5= (4-0)^2 + (a-1)^2

5= 16 + (a-1)^2

Any help or can give me a site with detailed examples would greatly be appreciated. Thanks.

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