document.write( "Question 22507: Find the slope of the graph of the linear function of f\r
\n" ); document.write( "\n" ); document.write( "f(6) = -1, F(3)=8 I know the answer (-3) I just don't know how to get it.
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Algebra.Com's Answer #10958 by Earlsdon(6294)\"\" \"About 
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Try this:
\n" ); document.write( "Start with the slope-intercept form.
\n" ); document.write( "f(x) = mx+b Now write two equations using the given data.\r
\n" ); document.write( "\n" ); document.write( "f(6) = m(6)+b = -1
\n" ); document.write( "f(3) = m(3)+b = 8 Solve this system of equations by subtracting one from the other to find the slope, m.\r
\n" ); document.write( "\n" ); document.write( "6m + b = -1
\n" ); document.write( "-(3m + b = 8)
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\n" ); document.write( "3m = -9 Divide both sides by 3
\n" ); document.write( "m = -3\r
\n" ); document.write( "\n" ); document.write( "The slope is -3.
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