document.write( "Question 1161459: What is the equation of the line that has a slope of -2 and goes through the point (4, -1) \n" ); document.write( "

Algebra.Com's Answer #785020 by math_helper(2461) $\"\"$ $\"About$

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document.write( "Start with point-slope form:   where m is slope and 
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document.write( "( ,  ) is any point on the line:\r
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document.write( "y - (-1) =  -2(x - 4)
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document.write( "y + 1 = -2(x - 4)       <<<<  point-slope form\r
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document.write( "You can continue, by solving for y, you get slope-intercept form y = mx+b where m is slope and b is the y-intercept:\r
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document.write( "y + 1 = -2x + 8
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document.write( "y = -2x + 7              <<<< slope-intercept form\r
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document.write( "Finally, if you can put it in \"standard form\":  Ax + By = C:\r
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document.write( "2x + y = 7               <<<< standard form (slope is -A/B, y-intercept is C/B,
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document.write( "                              x-intercept is C/A)\r
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