式2: "y" Subscript, 1 , Baseline tilde 3546.7 2 left parenthesis, 2 Superscript, left parenthesis, 0.0 8 1 3 9 5 left parenthesis, "x" Subscript, 1 , Baseline minus 46.6 3 2 , right parenthesis , right parenthesis , Baseline , right parenthesis plus 6986.5y1~3546.7220.081395x1−46.632+6986.5