document.write( "Question 252783: Write a linear function f such that it has the indicated function values:
\n" ); document.write( "f(-1)=4, f(-3)=8 \n" ); document.write( "
Algebra.Com's Answer #184854 by nerdybill(7384)\"\" \"About 
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Write a linear function f such that it has the indicated function values:
\n" ); document.write( "f(-1)=4, f(-3)=8
\n" ); document.write( ".
\n" ); document.write( "The problem gives you two points:
\n" ); document.write( "(-1, 4)
\n" ); document.write( "and
\n" ); document.write( "(-3, 8)
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\n" ); document.write( "Slope of the line:
\n" ); document.write( "m = (8-4)/(-3- -1)
\n" ); document.write( "m = (8-4)/(-3+1)
\n" ); document.write( "m = 4/(-2)
\n" ); document.write( "m = -2
\n" ); document.write( ".
\n" ); document.write( "Plug one point (-1, 4) and slope -2 into \"point-slope\" form:
\n" ); document.write( "y - y1 = m(x - x1)
\n" ); document.write( "y - 4 = -2(x - -1)
\n" ); document.write( "y - 4 = -2(x + 1)
\n" ); document.write( "y - 4 = -2x - 2
\n" ); document.write( "y = -2x + 2 (this is the \"slope-intercept\" of the line)\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
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