Algebra.Com's Answer #113804 by jim_thompson5910(35256)  You can put this solution on YOUR website! # 1\r \n" );
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document.write( "Since the equation has a y-intercept of 4, this means that the line goes through the point (0,4)\r \n" );
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document.write( "If you want to find the equation of line with a given a slope of which goes through the point ( , ), you can simply use the point-slope formula to find the equation:\r \n" );
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document.write( "---Point-Slope Formula---\r \n" );
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document.write( " where is the slope, and is the given point\r \n" );
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document.write( "So lets use the Point-Slope Formula to find the equation of the line\r \n" );
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document.write( " Plug in , , and (these values are given)\r \n" );
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document.write( " Distribute \r \n" );
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document.write( " Multiply and to get \r \n" );
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document.write( " Add 4 to both sides to isolate y\r \n" );
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document.write( " Add and to get \r \n" );
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document.write( "Answer:\r \n" );
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document.write( "So the equation of the line with a slope of which goes through the point ( , ) is:\r \n" );
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document.write( " which is now in form where the slope is and the y-intercept is \r \n" );
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document.write( "Notice if we graph the equation and plot the point ( , ), we get (note: if you need help with graphing, check out this solver)\r \n" );
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document.write( " Graph of through the point ( , )\r \n" );
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document.write( "and we can see that the point lies on the line. Since we know the equation has a slope of and goes through the point ( , ), this verifies our answer.\r \n" );
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document.write( "# 2\r \n" );
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document.write( "First let's find the slope of the line through the points and \r \n" );
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document.write( " Start with the slope formula.\r \n" );
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document.write( " Plug in , , , and \r \n" );
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document.write( " Subtract from to get \r \n" );
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document.write( " Subtract from to get \r \n" );
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document.write( " Reduce\r \n" );
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document.write( "So the slope of the line that goes through the points and is \r \n" );
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document.write( "Now let's use the point slope formula:\r \n" );
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document.write( " Start with the point slope formula\r \n" );
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document.write( " Plug in , , and \r \n" );
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document.write( " Rewrite as \r \n" );
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document.write( " Distribute\r \n" );
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document.write( " Multiply\r \n" );
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document.write( " Subtract 6 from both sides. \r \n" );
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document.write( " Combine like terms. \r \n" );
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document.write( " Simplify\r \n" );
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document.write( "So the equation that goes through the points and is \r \n" );
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document.write( " Notice how the graph of goes through the points and . So this visually verifies our answer.\r \n" );
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document.write( " Graph of through the points and \r \n" );
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