4chan archive /sci/ (index)
2012-09-06 01:17 5030862 Anonymous (dedekind cut.jpg 280x112 3kB)
Consider the Cartesian coordinates (x1,y1) and (x2,y2) where (x1,y1) and (x2,y2) are on the same function. Why is it that, holding (x1,y1) constant that (a*x2,y2) shrinks that graph horizontally when a>1? This is kind of counter intuitive to me. Thanks for help

4 min later 5030874 Anonymous
I know it's baby math, but I haven't done math in years. Any help would be great.

5 min later 5030882 Anonymous
because the addition of the multiple a decreases the needed value of x for the coordinate to rest on y2. thereby when you view the graph over the same scale as when it was without the factor a you will see it shrunk by factor 1/a along x as lower values of x give the same values of y earlier and with higher frequency. this is very messy and for that i apologise.

8 min later 5030893 Anonymous
>>5030879 I'ts just algebra 2. I don't know a good way to phrase it. I just know that (x1,y1) and (x2, y2) are on the same line. >>5030882 Thanks I think I get it.

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