document.write( "Question 171792: x | y how do i solve this'[
\n" ); document.write( "3 |5.4
\n" ); document.write( "7 |12.6
\n" ); document.write( "12|21.6 \n" ); document.write( "
Algebra.Com's Answer #126930 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
SEEING AS THIS IS A LINEAR RELATIONSHIP
\n" ); document.write( "5.4/3=1.8
\n" ); document.write( "12.6/7=1.8
\n" ); document.write( "21.6/12=1.8
\n" ); document.write( "WE CAN US THE LINE EQUATION:
\n" ); document.write( "Y=mX+b WHERE m=SLOPE & b=Y INTERCEPT.
\n" ); document.write( "SLOPE=(Y2-Y1)/(X2-X1)
\n" ); document.write( "SLOPE=(12.6-5.4)/7-3)
\n" ); document.write( "SLOPE=7.2/4
\n" ); document.write( "SLOPE=1.8
\n" ); document.write( "NOW WE SUBSTITUTE ONE SET OF X & Y VALUES & SOLVE FOR b.
\n" ); document.write( "5.4=1.8*3+b
\n" ); document.write( "5.4=5.4+B
\n" ); document.write( "b=0
\n" ); document.write( "THUS THE EQUATION IS:
\n" ); document.write( "Y=1.8X \r
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