Question

HELP! Distance and Midpoint Formulas:
could someone help me with this? I know its not hard, but I'm really bad at maths:
http://curriculum.kcdistancelearning.com/courses/GEOMx-HS-A09/a/unit03/resources/docs/DistanceMidpointFormulas_WritingAssignment.pdf

Answer 1

I'll try to help out with the logic for the Distance formula.

We want the distance between point (1,1) and (3,3).
So it is clear that what we want is a hypotenuse, and we can calculate that using the Pythagorean theorem. The legs of the triangle are of length 2 and 2 respectively. We got those lengths by doing (x2-x1) and (y2-y1) respectively.
So hypotenuse = sqrt of [(x2-x1)^2+(y2-y1)^2]
And voila. That is the formula for distance between two points on a Cartesian plane. :)

Answer 2

Are you comfortable with distance now @jorgesnz ?

Answer 3

@allank, This poster just wants answers, I was helping with this very same post, when he closed it. No dialog, at all. Good luck with it. They say they want to learn, or don't understand etc. but won't stick around and work with the problem

Answer 4

Too bad. You're right @radar . Math needs understanding =)

Answer 5

If you will look under the closed questions you will see this same post, and you will note how far I had gone with it, before it was closed.