นิพจน์ 18: "y" equals 3 left brace, negative 6 less than or equal to "x" less than or equal to negative 2 , right bracey=3−6≤x≤−2
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นิพจน์ 19: "x" equals negative 6 left brace, 2 less than or equal to "y" less than or equal to 5 , right bracex=−62≤y≤5
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นิพจน์ 20: "y" equals negative 5 left brace, negative 4 less than or equal to "x" less than or equal to 4 , right bracey=−5−4≤x≤4
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นิพจน์ 21: "x" equals negative 4 left brace, negative 7 less than or equal to "y" less than or equal to negative 5 , right bracex=−4−7≤y≤−5
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นิพจน์ 22: "y" equals negative 7 left brace, negative 4 less than or equal to "x" less than or equal to 4 , right bracey=−7−4≤x≤4
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นิพจน์ 23: "x" equals 4 left brace, negative 7 less than or equal to "y" less than or equal to negative 5 , right bracex=4−7≤y≤−5
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นิพจน์ 24: "x" equals negative 8 left brace, negative 4 less than or equal to "y" less than or equal to 0 , right bracex=−8−4≤y≤0
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นิพจน์ 25: "y" plus 5 equals left parenthesis, "x" plus 9 , right parenthesis left brace, negative 9 less than or equal to "x" less than or equal to negative 8 , right bracey+5=x+9−9≤x≤−8
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นิพจน์ 26: "x" equals 8 left brace, negative 4 less than or equal to "y" less than or equal to 0 , right bracex=8−4≤y≤0
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นิพจน์ 27: "y" plus 5 equals negative left parenthesis, "x" minus 9 , right parenthesis left brace, 8 less than or equal to "x" less than or equal to 9 , right bracey+5=−x−98≤x≤9
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นิพจน์ 28: "y" minus 2 equals negative left parenthesis, "x" minus 10 , right parenthesis left brace, 10 less than or equal to "x" less than or equal to 11 , right bracey−2=−x−1010≤x≤11
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นิพจน์ 29: "y" minus 2 equals left parenthesis, "x" minus 12 , right parenthesis left brace, 11 less than or equal to "x" less than or equal to 12 , right bracey−2=x−1211≤x≤12
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นิพจน์ 30: "y" equals 2 left brace, 12 less than or equal to "x" less than or equal to 16 , right bracey=212≤x≤16
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นิพจน์ 31: "y" minus 2 equals negative left parenthesis, "x" minus 16 , right parenthesis left brace, 16 less than or equal to "x" less than or equal to 17 , right bracey−2=−x−1616≤x≤17
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นิพจน์ 32: "x" equals 17 left brace, negative 1 less than or equal to "y" less than or equal to 1 , right bracex=17−1≤y≤1
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นิพจน์ 33: "y" plus 1 equals left parenthesis, "x" minus 17 , right parenthesis left brace, negative 2 less than or equal to "y" less than or equal to negative 1 , right bracey+1=x−17−2≤y≤−1
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นิพจน์ 34: "y" equals negative 2 left brace, 12 less than or equal to "x" less than or equal to 16 , right bracey=−212≤x≤16
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นิพจน์ 35: "y" plus 2 equals negative left parenthesis, "x" minus 12 , right parenthesis left brace, 11 less than or equal to "x" less than or equal to 12 , right bracey+2=−x−1211≤x≤12
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นิพจน์ 36: "y" plus 2 equals left parenthesis, "x" minus 10 , right parenthesis left brace, 10 less than or equal to "x" less than or equal to 11 , right bracey+2=x−1010≤x≤11
