document.write( "Question 83878: What is the slope and y intercept of the line?
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Algebra.Com's Answer #60355 by bucky(2189)\"\" \"About 
You can put this solution on YOUR website!
Given:
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\n" ); document.write( "-2y = 3x - 15
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\n" ); document.write( "You can easily find the slope and the y-axis intercept if you can get the given equation
\n" ); document.write( "in the form:
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\n" ); document.write( "y = mx + b
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\n" ); document.write( "In this form the slope is \"m\" and the y-axis intercept is \"b\"
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\n" ); document.write( "To get the given equation into slope intercept form, you need to solve for +y. In this case
\n" ); document.write( "the left side will become +y if you divide all terms on both sides of the given equation
\n" ); document.write( "by -2. The process is as follows:
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\n" ); document.write( "-2y = 3x - 15 <--- given equation
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\n" ); document.write( "(-2y/-2) = (3x/-2) - (15/-2) <--- shows division of all terms by -2
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\n" ); document.write( "y = -(3/2)x - (-15/2) <--- notice that - (-15/2) = + 15/2
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\n" ); document.write( "y = -(3/2)x + (15/2) <--- given equation in slope intercept form
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\n" ); document.write( "By comparing this equation with the slope intercept form, you can see that \"m\" (the
\n" ); document.write( "multiplier of the \"x\") is -3/2 and \"b\" the y-axis intercept is +15/2. That's the answer
\n" ); document.write( "to the problem. As an aid to seeing that this is correct, here's a graph of the original
\n" ); document.write( "equation in the problem:
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\n" ); document.write( "\"graph%28300%2C300%2C-20%2C20%2C-20%2C20%2C%28-1%2F2%29%2A%283x-15%29%29\"
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\n" ); document.write( "Notice that the slope is negative and the value of y where the graph crosses the y-axis is
\n" ); document.write( "about +7.5 or +15/2.
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\n" ); document.write( "Hope this helps you to understand the problem a little more.
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