運算式 17: "x" equals negative .0 7 left parenthesis, "y" plus 6 , right parenthesis squared plus .3 left brace, 0 less than or equal to "x" less than or equal to 2.2 9 2 , right brace left brace, "y" less than or equal to negative 6.3 3 3 , right bracex=−.07y+62+.30≤x≤2.292y≤−6.333
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運算式 18: "y" equals negative 2 left parenthesis, "x" plus .1 3 , right parenthesis squared left brace, negative 1.7 6 less than or equal to "x" less than or equal to negative 1.1 9 3 9 , right bracey=−2x+.132−1.76≤x≤−1.1939
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運算式 19: "y" equals 4.9 9 left parenthesis, "x" plus .9 , right parenthesis squared minus 9 left brace, negative 1.7 6 less than or equal to "x" less than or equal to negative 1.3 2 3 , right bracey=4.99x+.92−9−1.76≤x≤−1.323
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運算式 20: "y" equals negative .2 9 left parenthesis, "x" minus 1.6 , right parenthesis squared left brace, negative 1.1 9 4 less than or equal to "x" less than or equal to 1.4 , right bracey=−.29x−1.62−1.194≤x≤1.4
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運算式 21: "x" equals left parenthesis, "y" plus 4 , right parenthesis squared minus 4 left brace, "x" less than or equal to negative 1.2 0 9 , right brace left brace, negative 3.3 7 6 less than or equal to "y" , right bracex=y+42−4x≤−1.209−3.376≤y
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運算式 22: "y" equals negative 1.0 3 left parenthesis, "x" plus 1.8 , right parenthesis squared left brace, negative 4 less than or equal to "x" less than or equal to negative 3.6 1 , right bracey=−1.03x+1.82−4≤x≤−3.61
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運算式 23: "x" equals .7 left parenthesis, "y" plus 2.9 , right parenthesis squared minus 8 left brace, negative 4.5 0 4 less than or equal to "x" less than or equal to negative 1 , right brace left brace, negative 3 less than or equal to "y" , right bracex=.7y+2.92−8−4.504≤x≤−1−3≤y
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運算式 24: "y" equals negative left parenthesis, "x" plus 3.9 , right parenthesis squared minus .3 left brace, negative 5.9 less than or equal to "x" less than or equal to negative 4.5 0 4 , right bracey=−x+3.92−.3−5.9≤x≤−4.504
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運算式 25: "y" equals .8 left parenthesis, "x" plus 4.6 , right parenthesis squared minus 7 left brace, negative 5.7 8 2 less than or equal to "x" less than or equal to negative 3.8 2 4 , right bracey=.8x+4.62−7−5.782≤x≤−3.824
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運算式 26: "x" equals .1 9 left parenthesis, "y" plus 4.8 9 , right parenthesis squared minus 5.9 6 9 left brace, negative 5.8 8 3 less than or equal to "y" less than or equal to negative 4 , right bracex=.19y+4.892−5.969−5.883≤y≤−4
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運算式 27: "y" equals negative 11 left parenthesis, "x" plus 3.7 8 , right parenthesis minus 7 left brace, negative 3.9 7 4 less than or equal to "x" less than or equal to negative 3.8 2 4 , right bracey=−11x+3.78−7−3.974≤x≤−3.824
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運算式 28: "y" equals negative .1 left parenthesis, "x" plus .8 , right parenthesis squared plus 3 left brace, negative 8.2 7 2 less than or equal to "x" less than or equal to negative 6.7 9 5 , right bracey=−.1x+.82+3−8.272≤x≤−6.795
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運算式 29: "y" equals left parenthesis, "x" plus 7.8 , right parenthesis squared minus 5.5 left brace, negative 8.4 3 9 less than or equal to "x" less than or equal to negative 6.2 9 , right bracey=x+7.82−5.5−8.439≤x≤−6.29
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運算式 30: "y" equals 15 left parenthesis, "x" plus 8.1 , right parenthesis left brace, negative 8.4 3 9 less than or equal to "x" less than or equal to negative 8.2 7 2 , right bracey=15x+8.1−8.439≤x≤−8.272
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運算式 31: "y" equals .5 left parenthesis, "x" plus 3 , right parenthesis minus 1.5 9 left brace, negative 6.2 9 6 less than or equal to "x" less than or equal to negative 5.4 9 3 , right bracey=.5x+3−1.59−6.296≤x≤−5.493
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運算式 32: "y" equals left parenthesis, "x" plus 2.4 , right parenthesis squared minus 5 left brace, negative 3.6 3 6 less than or equal to "x" less than or equal to negative 1.6 5 , right bracey=x+2.42−5−3.636≤x≤−1.65
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運算式 33: "y" equals negative 6 left parenthesis, "x" plus 2.3 9 , right parenthesis left brace, negative 1.9 6 1 less than or equal to "x" less than or equal to negative 1.6 5 , right bracey=−6x+2.39−1.961≤x≤−1.65
