Khan/khan-exercises — Issue #6696: Line relationships - line relationships problem broke
Author: KhanBugz
Created: 2011-11-19 16:11:46+00:00
State: open
Labels: chrome, not-showing

Reporter: alfredas.zingeris@gmail.com

Hello, i can not see line-relationships exercise. I can not get hint, or input answer. All i see is:

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 )

[line_relationships.html?seed=140&problem=perpendicular-graph](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/line_relationships.html?seed=140&problem=perpendicular-graph&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/line_relationships.html?seed=140&problem=perpendicular-graph&debug&activity=undefined)

undefined

Mozilla/5.0 (X11; Linux i686) AppleWebKit/534.30 (KHTML, like Gecko) Ubuntu/10.04 Chromium/12.0.742.112 Chrome/12.0.742.112 Safari/534.30

MathJax is loaded, ready, queue length: 0