表达式19: "y" minus 60 equals StartFraction, 1 Over 2.5 , EndFraction left parenthesis, "x" plus 50 , right parenthesis left brace, negative 45.3 8 5 less than "x" less than or equal to negative 40.6 4 minus "d" , right bracey−60=12.5x+50−45.385<x≤−40.64−d
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表达式20: "y" minus 60 equals negative 2.5 left parenthesis, "x" plus 50 , right parenthesis left brace, 64.6 2 less than "y" less than or equal to 69.7 0 4 6 3 minus "d" , right bracey−60=−2.5x+5064.62<y≤69.70463−d
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表达式21: "y" minus 60 equals negative 2.5 left parenthesis, "x" plus 50 , right parenthesis left brace, 50.3 plus "d" less than or equal to "y" less than 55.3 8 4 6 3 , right bracey−60=−2.5x+5050.3+d≤y<55.38463
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表达式22: "y" minus 60 equals 5 left parenthesis, "x" plus 50 , right parenthesis left brace, 64.9 0 3 less than "y" less than or equal to 68 plus "d" , right bracey−60=5x+5064.903<y≤68+d
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表达式23: "y" minus 60 equals 5 left parenthesis, "x" plus 50 , right parenthesis left brace, 55.0 9 7 greater than "y" greater than or equal to 52 minus "d" , right bracey−60=5x+5055.097>y≥52−d
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表达式24: "y" minus 60 equals negative 1 fifth left parenthesis, "x" plus 50 , right parenthesis left brace, negative 54.9 0 3 greater than "x" greater than or equal to negative 58 minus "d" , right bracey−60=−15x+50−54.903>x≥−58−d
24
表达式25: "y" minus 60 equals negative 1 fifth left parenthesis, "x" plus 50 , right parenthesis left brace, negative 45.0 9 7 less than "x" less than or equal to negative 42 plus "d" , right bracey−60=−15x+50−45.097<x≤−42+d
25
表达式26: "y" minus 60 equals negative 5 left parenthesis, "x" plus 50 , right parenthesis left brace, 64.9 0 3 less than "y" less than or equal to 68 plus "d" , right bracey−60=−5x+5064.903<y≤68+d
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表达式27: "y" minus 60 equals negative 5 left parenthesis, "x" plus 50 , right parenthesis left brace, 55.0 9 7 greater than "y" greater than or equal to 52 minus "d" , right bracey−60=−5x+5055.097>y≥52−d
27
表达式28: "y" minus 60 equals 1 fifth left parenthesis, "x" plus 50 , right parenthesis left brace, negative 45.0 9 7 less than "x" less than or equal to negative 42 plus "d" , right bracey−60=15x+50−45.097<x≤−42+d
28
表达式29: "y" minus 60 equals 1 fifth left parenthesis, "x" plus 50 , right parenthesis left brace, negative 54.9 0 3 greater than "x" greater than or equal to negative 58 minus "d" , right bracey−60=15x+50−54.903>x≥−58−d
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表达式30: "y" minus 60 equals StartFraction, 1 Over 1.5 0 , EndFraction left parenthesis, "x" plus 50 , right parenthesis left brace, negative 45.8 4 8 less than "x" less than negative 43.3 plus "d" , right bracey−60=11.50x+50−45.848<x<−43.3+d
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表达式31: "y" minus 60 equals StartFraction, 1 Over 1.5 0 , EndFraction left parenthesis, "x" plus 50 , right parenthesis left brace, negative 54.1 5 2 greater than "x" greater than or equal to negative 56.7 minus "d" , right bracey−60=11.50x+50−54.152>x≥−56.7−d
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表达式32: "y" minus 60 equals negative StartFraction, 1 Over 1.5 0 , EndFraction left parenthesis, "x" plus 50 , right parenthesis left brace, negative 54.1 5 2 greater than "x" greater than or equal to negative 56.7 minus "d" , right bracey−60=−11.50x+50−54.152>x≥−56.7−d
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表达式33: "y" minus 60 equals negative StartFraction, 1 Over 1.5 0 , EndFraction left parenthesis, "x" plus 50 , right parenthesis left brace, negative 45.8 4 8 less than "x" less than negative 43.3 plus "d" , right bracey−60=−11.50x+50−45.848<x<−43.3+d
33
表达式34: "y" minus 60 equals negative 1.5 0 left parenthesis, "x" plus 50 , right parenthesis left brace, 64.1 5 2 less than "y" less than 66.6 plus "d" , right bracey−60=−1.50x+5064.152<y<66.6+d
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表达式35: "y" minus 60 equals negative 1.5 0 left parenthesis, "x" plus 50 , right parenthesis left brace, 55.8 4 8 greater than "y" greater than or equal to 53.4 minus "d" , right bracey−60=−1.50x+5055.848>y≥53.4−d
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表达式36: "y" minus 60 equals 1.5 0 left parenthesis, "x" plus 50 , right parenthesis left brace, 64.1 5 2 less than "y" less than 66.6 plus "d" , right bracey−60=1.50x+5064.152<y<66.6+d
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表达式37: "y" minus 60 equals 1.5 0 left parenthesis, "x" plus 50 , right parenthesis left brace, 55.8 4 8 greater than "y" greater than or equal to 53.4 minus "d" , right bracey−60=1.50x+5055.848>y≥53.4−d
