Hello, \r\n" );
document.write( "What is the slope of THE LINE WHICH CONTAINS THE \r\n" );
document.write( "POINTS (-5,2) and (1,4)? \r\n" );
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document.write( "Plot those two points\r\n" );
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\r\n" );
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document.write( "Draw a green vertical line through the \r\n" );
document.write( "point (1,4) and a brown horizontal line through\r\n" );
document.write( "the point (-5,2) \r\n" );
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\r\n" );
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document.write( "Now draw a blue line through the points (-5,2) and (1,4)\r\n" );
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\r\n" );
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document.write( "You now see a right triangle formed by the three \r\n" );
document.write( "lines: \r\n" );
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document.write( "Using the y-axis as a measuring stick, count the number \r\n" );
document.write( "of units which is the length of the green vertical side \r\n" );
document.write( "of the triangle (the right side of the triangle). You \r\n" );
document.write( "will see that it is 2 units long. This is called the \r\n" );
document.write( "RISE.\r\n" );
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document.write( "Now, using the x-axis as a measuring stick, count the \r\n" );
document.write( "number of units which is the length of the brown \r\n" );
document.write( "horizontal side of the triangle (the bottom side or\r\n" );
document.write( "base of the triangle. You will see that it \r\n" );
document.write( "is 2 units long. This is called the RUN.\r\n" );
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document.write( "Now we form the fraction RISE/RUN which is the fraction\r\n" );
document.write( "2/6 which reduces to 1/3.\r\n" );
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document.write( "Now we observe whether the blue line goes uphill to \r\n" );
document.write( "the right or downhill to the right. When a line goes \r\n" );
document.write( "uphill to the right, we give the slope a positive sign, \r\n" );
document.write( "and when it goes downhill to the right, we give the \r\n" );
document.write( "slope a negative sign. Since this blue line goes \r\n" );
document.write( "uphill to the right, we give its slope a positive sign.\r\n" );
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document.write( "Therefore the slope of the blue line is +1/3\r\n" );
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document.write( "Edwin
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document.write( "![\"\"](\"/images/stars/stars-13.gif\")
