document.write( "Question 665013: write the slope intercept equation for (-4,-1) and (1,9) \n" ); document.write( "
Algebra.Com's Answer #413617 by rfer(16322)\"\" \"About 
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slope
\n" ); document.write( "m=(9--1)/(1--4)
\n" ); document.write( "m=10/5
\n" ); document.write( "m=2
\n" ); document.write( "---------------
\n" ); document.write( "y=mx+b
\n" ); document.write( "9=2*1+b
\n" ); document.write( "9=2+b
\n" ); document.write( "b=4.5
\n" ); document.write( "----------------
\n" ); document.write( "y=2x+4.5
\n" ); document.write( "
\n" );