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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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#1 2013-05-16 02:11:43

mom
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value

I have no idea why but I completely forgot how to do this one.

find the value of a such that the three points (1,3), (6,5), and (a,-1) lie on the same line.

 

#2 2013-05-16 02:19:45

bobbym
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Re: value

Hi mom;

Use the point point equation for the first two points and then just solve for a. a = - 9.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

#3 2013-05-16 02:58:51

mom
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Re: value

Ok, thanks. No idea why it was throwing me off

 

#4 2013-05-16 03:02:07

bobbym
Administrator

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Re: value

You are welcome.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

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