document.write( "Question 123007This question is from textbook Algebra I
\n" ); document.write( ": It contains a graph to find the constant of a slope. I know how to find the slope but not a constant, teacher is not helpful, he describes the problem so he knows it, which is not helpful to children.
\n" ); document.write( "The problem shows a graphy with a blue line stretching from Q2's top left corner and reaching Q4's bottom right corner. In Q4 it shows a blue dot at
\n" ); document.write( "(2,-2) then another blue dot at (0,0) Then it says y= -x\r
\n" ); document.write( "\n" ); document.write( "I cannot seem to figure this out \n" ); document.write( "
Algebra.Com's Answer #90262 by stanbon(75887)\"\" \"About 
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The problem shows a graphy with a blue line stretching from Q2's top left corner and reaching Q4's bottom right corner. In Q4 it shows a blue dot at
\n" ); document.write( "(2,-2) then another blue dot at (0,0) Then it says y= -x
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\n" ); document.write( "You have a line that passes thru (2,-2) and (0,0)
\n" ); document.write( "The slope = (change in y)/(change in x) = (-2-0)/(2-0) = -2/2 = -1
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\n" ); document.write( "The equation of the line can be written as y = mx + b
\n" ); document.write( "You know m=-1, and y=0 when x =0
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\n" ); document.write( "You substitute those values in the equation to find \"b\":
\n" ); document.write( "0 = -1*0 + b
\n" ); document.write( "0 = 0 +b
\n" ); document.write( "b = 0
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\n" ); document.write( "So the equation of the graph is y = (-1)x+0
\n" ); document.write( "or simply y = -x
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\n" ); document.write( "Hope that helps.
\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
\n" ); document.write( " \n" ); document.write( "
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