表达式12: "y" equals 0.6 "x" left brace, 2.9 1 less than or equal to "x" less than or equal to 3.5 , right bracey=0.6x2.91≤x≤3.5
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表达式13: "y" equals 0.8 "x" left brace, 2.5 7 less than or equal to "x" less than or equal to 3.5 , right bracey=0.8x2.57≤x≤3.5
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表达式14: "y" equals 1 "x" left brace, 2.2 6 6 less than or equal to "x" less than or equal to 3.2 5 , right bracey=1x2.266≤x≤3.25
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表达式15: "y" equals 1.3 "x" left brace, 1.9 0 8 less than or equal to "x" less than or equal to 2.7 5 , right bracey=1.3x1.908≤x≤2.75
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表达式16: "y" equals 2 "x" left brace, 1.3 7 6 less than or equal to "x" less than or equal to 2 , right bracey=2x1.376≤x≤2
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表达式17: "y" equals 3 "x" left brace, 0.9 5 6 less than or equal to "x" less than or equal to 1.2 8 , right bracey=3x0.956≤x≤1.28
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表达式18: "y" equals 5 "x" left brace, 0.5 9 less than or equal to "x" less than or equal to 0.7 , right bracey=5x0.59≤x≤0.7
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表达式19: "y" equals left parenthesis, 1 "x" , right parenthesis plus 2 left brace, negative 0.7 7 greater than or equal to "x" greater than or equal to negative 1.2 3 4 , right bracey=1x+2−0.77≥x≥−1.234
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表达式20: "y" equals left parenthesis, 2.3 "x" , right parenthesis plus 2 left brace, negative 0.0 6 8 less than or equal to "x" less than or equal to 0.2 3 , right bracey=2.3x+2−0.068≤x≤0.23
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表达式21: "y" equals left parenthesis, 2 "x" plus 2 , right parenthesis left brace, negative 0.5 2 4 greater than or equal to "x" greater than or equal to negative 0.7 9 , right bracey=2x+2−0.524≥x≥−0.79
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表达式22: "y" equals left parenthesis, negative 0.9 "x" plus 1 , right parenthesis left brace, 0 less than or equal to "x" less than or equal to 0.4 6 8 , right bracey=−0.9x+10≤x≤0.468
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表达式23: "y" equals left parenthesis, 0.9 "x" plus 1.5 , right parenthesis left brace, 0.1 4 4 less than or equal to "x" less than or equal to 0.7 1 4 , right bracey=0.9x+1.50.144≤x≤0.714
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表达式24: "y" equals negative 0.9 "x" plus 1 left brace, negative 0.7 4 greater than or equal to "x" greater than or equal to negative 1.2 9 , right bracey=−0.9x+1−0.74≥x≥−1.29
