document.write( "Question 1151829: please help me find the equation of the line {with slope -1/3 passing through (4, -1)}
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Algebra.Com's Answer #773685 by Theo(13342)\"\" \"About 
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slope intercept form of the equation of a straight line is:
\n" ); document.write( "y = mx + b
\n" ); document.write( "m is the slope
\n" ); document.write( "b is the y-intercept.
\n" ); document.write( "since the slope is -1/3, then the equation becomes:
\n" ); document.write( "y = -1/3 * x + b
\n" ); document.write( "the point is (4,-2)
\n" ); document.write( "that means that the x-coordinate is 4 and the y coordinate is -1.
\n" ); document.write( "to find b, replace y with -1 and x with 4 to get:
\n" ); document.write( "-1 = -1/3 * 4 + b
\n" ); document.write( "solve for b to get:
\n" ); document.write( "b = -1 + 4/3 = -3/3 + 4/3 = 1/3.
\n" ); document.write( "the equation becomes y = -1/3 * x + 1/3
\n" ); document.write( "here's the graph of that equation.
\n" ); document.write( "you can see that the line goes through the point (4,-1).\r
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