Expression 9: left parenthesis, "x" minus 2000 , right parenthesis squared plus left parenthesis, "y" plus 2000 , right parenthesis squared equals 640000x−20002+y+20002=640000
9
Expression 10: left parenthesis, "x" plus 2000 , right parenthesis squared plus left parenthesis, "y" plus 2000 , right parenthesis squared equals 640000x+20002+y+20002=640000
10
Expression 11: left parenthesis, "x" minus 5000 , right parenthesis squared plus left parenthesis, "y" plus 5000 , right parenthesis squared equals 6400000 left brace, negative 7253.6 5 7 less than or equal to "y" , right brace left brace, "x" less than or equal to 5639.9 7 1 , right bracex−50002+y+50002=6400000−7253.657≤yx≤5639.971
11
Expression 12: left parenthesis, "x" plus 5000 , right parenthesis squared plus left parenthesis, "y" plus 5000 , right parenthesis squared equals 6400000 left brace, negative 7253.6 5 7 less than or equal to "y" , right brace left brace, "x" greater than or equal to negative 5639.9 7 1 , right bracex+50002+y+50002=6400000−7253.657≤yx≥−5639.971
12
Expression 13: "y" equals 3 halves "x" left brace, 1943.6 2 3 less than or equal to "x" less than or equal to 3589.9 6 2 , right bracey=32x1943.623≤x≤3589.962
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Expression 14: "y" equals negative 3 halves "x" left brace, negative 1943.6 2 3 greater than or equal to "x" greater than or equal to negative 3589.9 6 2 , right bracey=−32x−1943.623≥x≥−3589.962
14
Expression 15: left parenthesis, "x" minus 500 , right parenthesis squared plus left parenthesis, "y" plus 5000 , right parenthesis squared equals 900000 left brace, "y" less than or equal to negative 5000 , right brace left brace, "x" greater than or equal to 0 , right bracex−5002+y+50002=900000y≤−5000x≥0
15
Expression 16: left parenthesis, "x" plus 500 , right parenthesis squared plus left parenthesis, "y" plus 5000 , right parenthesis squared equals 900000 left brace, "y" less than or equal to negative 5000 , right brace left brace, "x" less than or equal to 0 , right bracex+5002+y+50002=900000y≤−5000x≤0