นิพจน์ 12: "y" equals 0.0 0 2 left parenthesis, "x" minus 9 , right parenthesis left parenthesis, "x" plus 7 , right parenthesis left parenthesis, "x" minus 8 , right parenthesis left parenthesis, "x" plus 6 , right parenthesis plus 55.6 left brace, 5.0 0 2 less than or equal to "x" less than or equal to 9.0 1 8 , right bracey=0.002x−9x+7x−8x+6+55.65.002≤x≤9.018
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นิพจน์ 13: "y" equals 0.0 3 left parenthesis, "x" , right parenthesis left parenthesis, "x" , right parenthesis plus 30 left brace, negative 15 less than or equal to "x" less than or equal to 0 , right bracey=0.03xx+30−15≤x≤0
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นิพจน์ 14: "y" equals negative 0.0 3 left parenthesis, "x" plus 30 , right parenthesis left parenthesis, "x" , right parenthesis plus 30 left brace, negative 15 less than or equal to "x" less than or equal to 0 , right bracey=−0.03x+30x+30−15≤x≤0
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นิพจน์ 15: "y" equals 0.0 9 left parenthesis, "x" minus 1 , right parenthesis left parenthesis, "x" , right parenthesis plus 11 left brace, 0.9 5 5 less than or equal to "x" less than or equal to 14.5 4 5 , right bracey=0.09x−1x+110.955≤x≤14.545
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นิพจน์ 16: "y" equals negative 0.0 9 left parenthesis, "x" minus 30 , right parenthesis left parenthesis, "x" , right parenthesis plus 8.5 left brace, 0.9 5 5 less than or equal to "x" less than or equal to 14.5 4 5 , right bracey=−0.09x−30x+8.50.955≤x≤14.545
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นิพจน์ 17: "y" equals 1.5 "x" plus 9.5 left brace, 1 less than or equal to "x" less than or equal to 10 , right bracey=1.5x+9.51≤x≤10
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นิพจน์ 18: "y" equals 0.5 "x" plus 19.5 left brace, 10 less than or equal to "x" less than or equal to 11 , right bracey=0.5x+19.510≤x≤11
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นิพจน์ 19: "y" equals negative 0.5 "x" plus 30 left brace, negative 8 less than or equal to "x" less than or equal to 0 , right bracey=−0.5x+30−8≤x≤0
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นิพจน์ 20: "y" equals negative 0.2 5 "x" plus 32 left brace, negative 9 less than or equal to "x" less than or equal to negative 8 , right bracey=−0.25x+32−9≤x≤−8
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นิพจน์ 21: "y" equals 0.1 left parenthesis, "x" minus 10 , right parenthesis left parenthesis, "x" minus 5 , right parenthesis left parenthesis, "x" , right parenthesis left brace, 0 less than or equal to "x" less than or equal to 10.8 , right bracey=0.1x−10x−5x0≤x≤10.8
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นิพจน์ 22: "y" equals negative 0.1 left parenthesis, "x" plus 10 , right parenthesis left parenthesis, "x" plus 5 , right parenthesis left parenthesis, "x" , right parenthesis left brace, negative 10.8 less than or equal to "x" less than or equal to 0 , right bracey=−0.1x+10x+5x−10.8≤x≤0
