document.write( "Question 124951: Solve the following system by graphing:
\n" ); document.write( "3x-6y=9
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\n" ); document.write( "\n" ); document.write( "Equation 1 in slope intercept form:\r
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\n" ); document.write( "\n" ); document.write( "y-intercept as an ordered pair =>
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\n" ); document.write( "\n" ); document.write( "Equation 2 in slope intercept form:\r
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\n" ); document.write( "\n" ); document.write( "y-intercept as an ordered pair =>
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\n" ); document.write( "\n" ); document.write( "Graph of the system:\r
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\n" ); document.write( "\n" ); document.write( "What is the solution for this system?\r
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\n" ); document.write( "\n" ); document.write( "What type of system is this?
\n" ); document.write( "dependant\r
\n" ); document.write( "\n" ); document.write( "i need all the help i can get
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Algebra.Com's Answer #91594 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Start with the given system of equations:\r
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\n" ); document.write( "\n" ); document.write( "\"3x-6y=9\"\r
\n" ); document.write( "\n" ); document.write( "\"1x-2y=3\"\r
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\n" ); document.write( "\n" ); document.write( "In order to graph these equations, we need to solve for y for each equation.\r
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\n" ); document.write( "\n" ); document.write( "So let's solve for y on the first equation\r
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\n" ); document.write( "\n" ); document.write( "\"3x-6y=9\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"-6y=9-3x\" Subtract \"3+x\" from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"-6y=-3x%2B9\" Rearrange the equation\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-3x%2B9%29%2F%28-6%29\" Divide both sides by \"-6\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-3%2F-6%29x%2B%289%29%2F%28-6%29\" Break up the fraction\r
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\n" ); document.write( "\n" ); document.write( "\"y=%281%2F2%29x-3%2F2\" Reduce\r
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\n" ); document.write( "\n" ); document.write( "Now lets graph \"y=%281%2F2%29x-3%2F2\" (note: if you need help with graphing, check out this solver)\r
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\n" ); document.write( "\n" ); document.write( "\"+graph%28+600%2C+600%2C+-10%2C+10%2C+-10%2C+10%2C+%281%2F2%29x-3%2F2%29+\" Graph of \"y=%281%2F2%29x-3%2F2\"\r
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\n" ); document.write( "\n" ); document.write( "So let's solve for y on the second equation\r
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\n" ); document.write( "\n" ); document.write( "\"1x-2y=3\" Start with the given equation\r
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\n" ); document.write( "\n" ); document.write( "\"-2y=3-x\" Subtract \"+x\" from both sides\r
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\n" ); document.write( "\n" ); document.write( "\"-2y=-x%2B3\" Rearrange the equation\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-x%2B3%29%2F%28-2%29\" Divide both sides by \"-2\"\r
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\n" ); document.write( "\n" ); document.write( "\"y=%28-1%2F-2%29x%2B%283%29%2F%28-2%29\" Break up the fraction\r
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\n" ); document.write( "\n" ); document.write( "\"y=%281%2F2%29x-3%2F2\" Reduce\r
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\n" ); document.write( "\n" ); document.write( "Now lets add the graph of \"y=%281%2F2%29x-3%2F2\" to our first plot to get:\r
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\n" ); document.write( "\n" ); document.write( " Graph of \"y=%281%2F2%29x-3%2F2\"(red) and \"y=%281%2F2%29x-3%2F2\"(green)\r
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\n" ); document.write( "\n" ); document.write( "From the graph, we can see that the two lines are identical (one lies perfectly on top of the other) and intersect at all points of both lines. So there are an infinite number of solutions and the system is dependent.
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