document.write( "Question 304404: find the slope if the regular price of gas is $1.26 in01/1997 and $2.31 in 01/2006 \n" ); document.write( "
Algebra.Com's Answer #217994 by checkley77(12844)\"\" \"About 
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(1.26,0)
\n" ); document.write( "(2.31,9)
\n" ); document.write( "Y=mX+b where m=slope & b= the Y intercept.
\n" ); document.write( "m=(Y2-Y1)/(x2-X1)
\n" ); document.write( "m=(9-0)/(2.31-1.26)
\n" ); document.write( "m=9/1.05
\n" ); document.write( "m=8.57 is the slope.
\n" ); document.write( "0=8.57*1.26+b
\n" ); document.write( "0=10.798+b
\n" ); document.write( "b=-10.798
\n" ); document.write( "Y=8.57X-10.798
\n" ); document.write( "\"+graph%28+300%2C+200%2C+-3%2C+3%2C+-10%2C+10%2C+8.75x+-10.798%29+\" (graph 300x200 pixels, x from -3 to 3, y from -10 to 10, 8.75x -10.798).
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