document.write( "Question 1002572: Find the slope of the line passing through the given points
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\n" ); document.write( "\n" ); document.write( "(-4,-1),(-1,-7) \n" ); document.write( "
Algebra.Com's Answer #619442 by mananth(16946)\"\" \"About 
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x1 y1 x2 y2
\n" ); document.write( "-4 -1 -1 -7
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\n" ); document.write( "slope m = (y2-y1)/(x2-x1)
\n" ); document.write( "( -7 - -1 )/( -1 - -4 )
\n" ); document.write( "( -6 / 3 )
\n" ); document.write( "m= -2
\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 ( -4 , -1 ) in
\n" ); document.write( "Y = m x + b
\n" ); document.write( "-1.00 = -2 * -4 + b
\n" ); document.write( "-1.00 = 8 + b
\n" ); document.write( "b= -1 + -8
\n" ); document.write( "b= -9
\n" ); document.write( "So the equation will be
\n" ); document.write( "Y = -2 x -9
\n" ); document.write( "m.ananth@hotmail.ca
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