表达式168: "y" equals negative .4 left parenthesis, negative .2 left parenthesis, "x" plus 43 , right parenthesis , right parenthesis squared minus 73 left brace, negative 132 less than "y" less than negative 86 , right brace left brace, negative 150 less than "x" less than negative 50 , right bracey=−.4−.2x+432−73−132<y<−86−150<x<−50
168
表达式169: "y" greater than or equal to negative 2 left parenthesis, negative .2 left parenthesis, "x" plus 26 , right parenthesis , right parenthesis squared minus 73 left brace, negative 120 less than "y" less than negative 86 , right brace left brace, negative 50 less than "x" less than negative 30 , right bracey≥−2−.2x+262−73−120<y<−86−50<x<−30
169
表达式170: "y" equals negative 86 left brace, negative 71.5 0 4 less than "x" less than negative 38 , 748 , right bracey=−86−71.504<x<−38,748
170
表达式171: left parenthesis, "x" plus 105 , right parenthesis squared plus left parenthesis, "y" plus 206.3 , right parenthesis squared greater than or equal to 73.7 squared left brace, "y" less than negative .4 left parenthesis, negative .2 left parenthesis, "x" plus 43 , right parenthesis , right parenthesis squared minus 73 , right brace left brace, negative 103 less than "x" less than negative 50 , right brace left brace, negative 200 less than "y" less than negative 86 , right bracex+1052+y+206.32≥73.72y<−.4−.2x+432−73−103<x<−50−200<y<−86
171
表达式172: "y" equals 1.6 "x" plus 0 left brace, negative 120 less than "y" less than negative 86 , right bracey=1.6x+0−120<y<−86
172
表达式173: "y" equals 1.6 "x" plus 20 left brace, negative 133 less than "y" less than negative 100 , right bracey=1.6x+20−133<y<−100
173
表达式174: "y" equals 1.6 "x" minus 30 left brace, negative 142 less than "y" less than negative 103 , right bracey=1.6x−30−142<y<−103
