Expression 2: "y" equals StartFraction, 1 Over 3 "x" , EndFractiony=13x
2
Expression 3: "y" equals StartFraction, left parenthesis, StartRoot, 3 , EndRoot minus StartRoot, 7 , EndRoot , right parenthesis left parenthesis, "x" minus 1 , right parenthesis Over 2 StartRoot, 3 , EndRoot "x" plus StartRoot, 7 , EndRoot minus StartRoot, 3 , EndRoot , EndFractiony=3−7x−123x+7−3