document.write( "Question 950813: Find an equation of the line containing the given pair of points? (-7,-2)and(-5,-9) \n" ); document.write( "
Algebra.Com's Answer #580661 by ankor@dixie-net.com(22740)\"\" \"About 
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\n" ); document.write( "Find an equation of the line containing the given pair of points? (-7,-2)and(-5,-9)
\n" ); document.write( "Find the slope: m = \"%28%28y2-y1%29%29%2F%28%28x2-x1%29%29\"
\n" ); document.write( "Assign the given pairs as follows
\n" ); document.write( "x1=-7; y1=-2
\n" ); document.write( "x2=-5; y2=-9
\n" ); document.write( "Find the slope
\n" ); document.write( "m = \"%28%28-9-%28-2%29%29%29%2F%28%28-5-%28-7%29%29%29\"
\n" ); document.write( "minus a minus is a plus
\n" ); document.write( "m = \"%28%28-9%2B2%29%29%2F%28%28-5%2B7%29%29\" = \"%28-7%29%2F2\"
\n" ); document.write( "Use the form y = mx + b, where y=-2 and x=-7 and m = \"-7%2F2\"
\n" ); document.write( "-2 = \"-7%2F2\"(-7) + b
\n" ); document.write( "-2 = \"49%2F2\" + b
\n" ); document.write( "lets us the decimal here
\n" ); document.write( "-2 = 24.5 + b
\n" ); document.write( "-2 - 24.5 = b
\n" ); document.write( "-26.5 - = b
\n" ); document.write( "b = -26.5
\n" ); document.write( "the equation then
\n" ); document.write( "y = \"-7%2F2\"x - 26.5
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\n" ); document.write( "Confirm this for yourself.
\n" ); document.write( "substitute the given x's and ensure they equal the given y's
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