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Midpoint and Distance Formulas
- Make sure that you know and understand how to use both of these formulas. They will be used in a lot of later work.
- Remember that the order of the x coordinates in the distance formula does not matter. So take whichever difference is easier to compute. The same comment applies to the y coordinates.
- After squaring the differences in the distance formula, be sure to take the positive square root of their sum.
Midpoint and Distance Formulas
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

























Carleen Eaton
Grant Fraser




2 answers
Thu Oct 13, 2011 9:05 PM
Post by Manuela Fridman on October 6, 2011
I found 2 minor mistake in this video that I think should be corrected and reposted. The 1st one: in "example:distance" Dr. Eaton put the answer was 6. I believe that is incorrect because sq root 9+25= sq root 34 not 36 as Dr. Eaton put. Therefore the answer would be 5.83. The 2nd thing, i'm not sure if this makes a difference in the overall answer but in the "example 2:midpoint and" section Dr Eaton says to first put "y2" first but actually rights it using the "x2". It made it a little confusing, but of course i realized it was just a simple mistake. Thank you very much for all of your help though! Dr Eaton and the rest of the tutors are great! Just wish i was able to sign up for the year long membership without having to pay upfront for all the classes. $35 is a little high every month.
1 answer
Wed Nov 2, 2011 9:17 PM
Post by Jonathan Taylor on October 25, 2011
I did not understand this question did u do the example as shown are did u make up a example
1 answer
Wed Nov 2, 2011 9:20 PM
Post by Jonathan Taylor on October 30, 2011
1st example of distance formula 9+25 is not 36 it was 34 so the square root shold have been 34