What is the point slope form with the table \r\n" );
document.write( "(X) 3,5, 7, 9\r\n" );
document.write( "(Y)-6,2,10,18\r\n" );
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document.write( "Let's plot those points and see if they are in a straight line:\r\n" );
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document.write( "They look like they do, judging from the above. We draw a\r\n" );
document.write( "line through them:\r\n" );
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document.write( "We can pick any two points of the four points \r\n" );
document.write( "to find the slope of the line. We'll get the\r\n" );
document.write( "same slope no matter which two of the points\r\n" );
document.write( "we pick. Let's pick (5,2) and {9,18).\r\n" );
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document.write( "To find the slope we use the slope formula:\r\n" );
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\r\n" );
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document.write( "where 
, 
, 
, 
\r\n" );
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document.write( "To find the equation, we use the point slope form:\r\n" );
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document.write( "and we solve for y and simplify to get the \r\n" );
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document.write( "slope intercept form:\r\n" );
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document.write( "
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document.write( "Edwin
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document.write( "![\"\"](\"/images/stars/stars-13.gif\")
