Khan/khan-exercises — Issue #6809: Algebra challenge - seeing code instead of problem - pasted in description.
Author: KhanBugz
Created: 2011-11-21 18:02:32+00:00
State: open
Labels: ie8, not-showing, xp

Reporter: previn.panwar@gmail.com

Find the slope and y-intercept of the line that is \color{GREEN}{\text{LINE_TYPE}} to \enspace \color{BLUE}{y = M_FRACM_SIGNx + B}\enspace and passes through the point \color{red}{(X, Y)}.

graphInit({
range: [[-10, 10], [-10, 10]],
scale: [18, 18],
tickStep: 1,
labelStep: 1,
unityLabels: false,
labelFormat: function( s ) { return "\\small{" + s + "}"; },
axisArrows: "<->"
});

plot(function( x ) {
return ( M * x + B );
}, [-10, 10], {
stroke: "BLUE"
});

circle( [X, Y], 1/4, {
stroke: "none",
fill: "#ff0000"
} );

m = -1 / M

b = Y - ( -1 / M * X )

[algebra_challenge.html?seed=5&problem=perpendicular-graph (line_relationships)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=5&problem=perpendicular-graph&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/algebra_challenge.html?seed=5&problem=perpendicular-graph&debug&activity=undefined)

undefined

Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)

MathJax is loaded, ready, queue length: 0