Artana/khan-exercises — comment on commit 63b6c6cdc6b96fbd00bca53a89ed6b762806c907
File: exercises/point_slope_form.html line 19
By Artana:

Scott,

The choice of problems I made are based directly on Khan's introductory
video. He shows them three different problems:

1. Two points - two easy points and just plug it in.
2. A slope and y-intercept.
3. Two points with the y designated as f(x).

I was planning to write all three.:)

On Wednesday, November 16, 2011, Scott Menke <
reply@reply.github.com>
wrote:
> This is up to you, but if this is supposed to be the introductory
exercise to point slope form, maybe it's easier to restate the problem as
"A line passes through both (x1, y1) and (x2, y2). Express the equation of
the line in point slope form," which would eliminate the need to go through
the motions of explaining that f(x1) is the same as y1. Might be easier,
your call!
>
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