Expression 4: "y" Subscript, 1 , Baseline tilde "a" "x" cubed plus "b" "x" squared plus "c" "x" Subscript, 1 , Baseline plus "d"y1~ax31+bx21+cx1+d
4
Expression 5: "y" Subscript, 1 , Baseline tilde "a" "x" to the 4th power plus "b" "x" cubed plus "c" "x" squared plus "d" "x" Subscript, 1 , Baseline plus "e"y1~ax41+bx31+cx21+dx1+e
5
Expression 6: "y" Subscript, 1 , Baseline tilde "a" left parenthesis, "b" Superscript, "x" Subscript, 1 , Baseline , Baseline , right parenthesisy1~abx1
6
Expression 7: "y" Subscript, 1 , Baseline tilde "a" plus "b" natural log left parenthesis, "x" Subscript, 1 , Baseline , right parenthesisy1~a+blnx1