Expression 1: "y" equals StartFraction, left parenthesis, "x" times left parenthesis, 6.2 times "x" plus 0.5 , right parenthesis , right parenthesis Over left parenthesis, "x" times left parenthesis, 6.2 times "x" positive 1.7 , right parenthesis positive 0.0 6 , right parenthesis , EndFraction Has graph. To audio trace, press ALT+T.y=x·6.2·x+0.5x·6.2·x+1.7+0.06