document.write( "Question 315195: what is the equation of the line through points (-3,2) and (-4,5) \n" ); document.write( "
Algebra.Com's Answer #225528 by CharlesG2(834)\"\" \"About 
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what is the equation of the line through points (-3,2) and (-4,5)\r
\n" ); document.write( "\n" ); document.write( "slope m = rise/run = (y2 - y1)/(x2 - x1)
\n" ); document.write( "m = (5 - 2)/(-4 - -3)
\n" ); document.write( "m = 3/(-4 + 3)
\n" ); document.write( "m = 3/(-1)
\n" ); document.write( "m = -3
\n" ); document.write( "slope intercept form of a line is y = mx + b,
\n" ); document.write( "where b is the y-intercept or vertical-intercept or the point (0,b)
\n" ); document.write( "y = -3x + b
\n" ); document.write( "plug in either of the points to solve for b
\n" ); document.write( "plugging in (-3,2):
\n" ); document.write( "2 = -3(-3) + b
\n" ); document.write( "2 = 9 + b
\n" ); document.write( "-7 = b
\n" ); document.write( "plugging in (-4,5):
\n" ); document.write( "5 = -3(-4) + b
\n" ); document.write( "5 = 12 + b
\n" ); document.write( "again -7 = b
\n" ); document.write( "equation of the line:
\n" ); document.write( "y = -3x - 7
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