document.write( "Question 583548: Find an equation of the line containing the given pair of points. (-7, -8) and (-3, -1) \n" ); document.write( "
Algebra.Com's Answer #372485 by mananth(16946)\"\" \"About 
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x1 y1 x2 y2
\n" ); document.write( "-7 -8 -3 -1
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\n" ); document.write( "slope m =(y2-y1)/(x2-x1)
\n" ); document.write( "( -1 - -8 )/( -3 - -7 )
\n" ); document.write( "( 7 / 4 )
\n" ); document.write( "m= 7/4
\n" ); document.write( "The required line passes through both the points. So we select one point and plug it with the slope
\n" ); document.write( "Plug value of the slope and point ( -7 , -8 ) in
\n" ); document.write( "Y = m x + b
\n" ); document.write( "-8.00 = 7/4 * -7 + b
\n" ); document.write( "-8.00 = -49/4 + b
\n" ); document.write( "b= -8 + 17/4
\n" ); document.write( "b= -12 1/ 4
\n" ); document.write( "So the equation will be
\n" ); document.write( "Y = 7/4 x + 17/4
\n" ); document.write( "m.ananth@hotmail.ca
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