document.write( "Question 1131292: What is the equation for the line that passes thru the points (2,-7) and (-2,4). Answer must be in print slope form \n" ); document.write( "
Algebra.Com's Answer #747919 by ikleyn(52781)\"\" \"About 
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\n" ); document.write( "What is the equation for the line that passes thru the points (2,-7) and (-2,4). Answer must be in \"highlight%28cross%28print%29%29\" point slope form.
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\n" ); document.write( "\n" ); document.write( "            Since the post by @josgarithmetic is absurdist,  I came to bring a correct solution.\r
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document.write( "First, calculate the slope.\r\n" );
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document.write( "    The formula for the slope of a straight line passing through two given points  \r\n" );
document.write( " (\"x%5B1%5D\",\"y%5B1%5D\")  and  (\"x%5B2%5D\",\"y%5B2%5D\")  is\r\n" );
document.write( "        m = \"%28y%5B2%5D-y%5B1%5D%29%2F%28x%5B2%5D-x%5B1%5D%29\".\r\n" );
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document.write( "    Substitute the given data  \"x%5B1%5D\" = 2,  \"y%5B1%5D\" = -7,  \"x%5B2%5D\" = -2, \"y%5B2%5D\" = 4  into the basic formula\r\n" );
document.write( "        m = \"%284-%28-7%29%29%2F%28%28-2%29-2%29\" = \"11%2F%28-4%29\" = \"-11%2F4\".\r\n" );
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document.write( "Next, find an equation of the line having the slope  \"-11%2F4\"  and passing through the given point (2,-7).\r\n" );
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document.write( "    An equation of a straight line in a coordinate plane which has the slope  m  and passes through the given point  P = (a,b)  is \r\n" );
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document.write( "        y - b = m*(x-a).     \r\n" );
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document.write( "    Substitute here  m = \"-11%2F7\",  a = 2,  b = -7,  and you will get\r\n" );
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document.write( "        y - (-7) = \"%28-11%2F4%29%2A%28x-2%29\",   or\r\n" );
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document.write( "        \r\n" );
document.write( "        y + 7 = \"%28-11%2F4%29%2A%28x-2%29\".\r\n" );
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document.write( "    \r\n" );
document.write( "    It is the equation in the slope-point form, and it is your final ANSWER.\r\n" );
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\n" ); document.write( "\n" ); document.write( "See the lesson\r
\n" ); document.write( "\n" ); document.write( "    - Equation for a straight line in a coordinate plane passing through two given points\r
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