表达式11: "y" equals "x" plus 9 left brace, negative 5 less than or equal to "x" less than or equal to negative 4 , right bracey=x+9−5≤x≤−4
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表达式12: "y" equals negative 1 half "x" plus 3 left brace, negative 4 less than or equal to "x" less than or equal to negative 2 , right bracey=−12x+3−4≤x≤−2
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表达式13: "y" equals 4 thirds "x" plus 20 thirds left brace, negative 5 less than or equal to "x" less than or equal to negative 2 , right bracey=43x+203−5≤x≤−2
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表达式14: "y" equals 0 left brace, negative 5 less than or equal to "x" less than or equal to negative 2 , right bracey=0−5≤x≤−2
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表达式15:
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表达式16: 3 greater than or equal to left parenthesis, "x" plus 10.5 , right parenthesis Superscript, 2 , Baseline plus left parenthesis, "y" minus 2.5 , right parenthesis squared3≥x+10.52+y−2.52
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表达式17: "x" equals negative 14 left brace, 0 less than or equal to "y" less than or equal to 5 , right bracex=−140≤y≤5
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表达式18: "x" equals negative 7 left brace, 0 less than or equal to "y" less than or equal to 5 , right bracex=−70≤y≤5
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表达式19: "y" equals 5 left brace, negative 14 less than or equal to "x" less than or equal to negative 7 , right bracey=5−14≤x≤−7
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表达式20: "y" equals 0 left brace, negative 14 less than or equal to "x" less than or equal to negative 7 , right bracey=0−14≤x≤−7
