Khan/khan-exercises — Issue #9543: Algebra challenge - HTML malfunctioning
Author: KhanBugz
Created: 2011-12-26 16:26:24+00:00
State: open
Labels: ie8, other, win7

Reporter: patrickwwells@gmail.com

I am unable to answer anything and the problem looks like this:
The equation of the line through the points (X1, Y1) and (X2, Y2) is written in the form y = mx + b.

What are the values of the slope m and the y-intercept b?

graphInit({
range: 10,
scale: 20,
tickStep: 1,
labelStep: 1,
unityLabels: false,
labelFormat: function( s ) { return "\\small{" + s + "}"; },
axisArrows: "<->"
});

style({ stroke: BLUE, fill: BLUE });
line( [X1 - 19, Y1 - 19 * M], [X2 + 19, Y2 + 19 * M] );
circle( [X1, Y1], 3/20 );
circle( [X2, Y2], 3/20 );

m = M

b = B

[algebra_challenge.html?seed=177&problem=show-points-and-or-graph (equation_of_a_line)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=177&problem=show-points-and-or-graph&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=177&problem=show-points-and-or-graph&debug&activity=undefined)

undefined

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; GTB7.2; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; MDDC; BRI/1; .NET4.0C; BRI/2; AskTbFWV5/5.9.1.14019)

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