表达式28: left parenthesis, "x" plus 18 , right parenthesis squared plus 2 left parenthesis, "y" minus 1.3 , right parenthesis squared equals 36 left brace, "x" less than or equal to negative 21 , right brace left brace, "y" greater than or equal to 0 , right bracex+182+2y−1.32=36x≤−21y≥0
28
表达式29: "y" equals StartFraction, 900000 Over 100000 , EndFraction left parenthesis, "x" minus 8 , right parenthesis left brace, 3 less than or equal to "y" less than or equal to 20 , right bracey=900000100000x−83≤y≤20
29
表达式30: "y" equals negative StartFraction, 900000 Over 100000 , EndFraction left parenthesis, "x" minus 19 , right parenthesis left brace, 3 less than or equal to "y" less than or equal to 20 , right bracey=−900000100000x−193≤y≤20
30
表达式31: "y" equals 20 left brace, 8 less than or equal to "x" less than or equal to 19 , right bracey=208≤x≤19
31
表达式32: "x" equals 8 left brace, 20 less than or equal to "y" less than or equal to 22 , right bracex=820≤y≤22
32
表达式33: "x" equals 19 left brace, 20 less than or equal to "y" less than or equal to 22 , right bracex=1920≤y≤22
33
表达式34: "y" equals 22 left brace, 8 less than or equal to "x" less than or equal to 19 , right bracey=228≤x≤19
34
表达式35: 4 left parenthesis, "x" minus 9 , right parenthesis squared plus left parenthesis, "y" minus 21 , right parenthesis squared equals .7 54x−92+y−212=.75
35
表达式36: 4 left parenthesis, "x" minus 11 , right parenthesis squared plus left parenthesis, "y" minus 21 , right parenthesis squared equals .5 74x−112+y−212=.57
36
表达式37: 4 left parenthesis, "x" minus 13 , right parenthesis squared plus left parenthesis, "y" minus 21 , right parenthesis squared equals .7 54x−132+y−212=.75
37
表达式38: 4 left parenthesis, "x" minus 15 , right parenthesis squared plus left parenthesis, "y" minus 21 , right parenthesis squared equals .7 54x−152+y−212=.75
38
表达式39: 4 left parenthesis, "x" minus 17 , right parenthesis squared plus left parenthesis, "y" minus 21 , right parenthesis squared equals .7 54x−172+y−212=.75
39
表达式40: "y" equals negative StartFraction, 1 Over 40 , EndFraction left parenthesis, "x" minus 13.5 , right parenthesis to the 4th power plus 28 left brace, "y" greater than or equal to 22 , right bracey=−140x−13.54+28y≥22
40
表达式41: "y" equals StartFraction, 1 Over 3.5 , EndFraction "x" plus 22 left brace, negative 20 less than or equal to "x" less than or equal to 10 , right bracey=13.5x+22−20≤x≤10
41
表达式42: "y" equals 1 half "x" plus 20 left brace, negative 20 less than or equal to "x" less than or equal to 10 , right bracey=12x+20−20≤x≤10
42
表达式43: 4 left parenthesis, "x" plus 20 , right parenthesis squared plus left parenthesis, "y" minus 13 , right parenthesis squared equals 94x+202+y−132=9
43
表达式44: left parenthesis, "x" plus 13 , right parenthesis squared plus left parenthesis, "y" plus 1.5 , right parenthesis squared equals 49 left brace, negative 20 less than or equal to "x" less than or equal to negative 10 , right brace left brace, "y" greater than or equal to 0 , right bracex+132+y+1.52=49−20≤x≤−10y≥0
44
表达式45: left parenthesis, "x" plus 50 , right parenthesis squared plus left parenthesis, "y" minus 50 , right parenthesis squared equals 144 left brace, "x" less than or equal to negative 40 , right bracex+502+y−502=144x≤−40
45
表达式46: left parenthesis, "x" plus 46 , right parenthesis squared plus left parenthesis, "y" minus 50 , right parenthesis squared equals 81 left brace, "x" less than or equal to negative 40 , right bracex+462+y−502=81x≤−40
46
表达式47: left parenthesis, "x" plus 7 , right parenthesis squared plus 2 left parenthesis, "y" minus 1.3 , right parenthesis squared equals 36 left brace, "x" less than or equal to negative 10 , right brace left brace, "y" greater than or equal to 0 , right bracex+72+2y−1.32=36x≤−10y≥0
47
表达式48: left parenthesis, "x" plus 37 , right parenthesis squared plus left parenthesis, "y" plus 1 , right parenthesis squared equals 49 left brace, negative 44 less than or equal to "x" less than or equal to negative 33 , right brace left brace, "y" greater than or equal to 0 , right bracex+372+y+12=49−44≤x≤−33y≥0
48
表达式49: left parenthesis, "x" plus 30 , right parenthesis squared plus 2 left parenthesis, "y" minus 1.3 , right parenthesis squared equals 36 left brace, "x" less than or equal to negative 33 , right brace left brace, "y" greater than or equal to 0 , right bracex+302+2y−1.32=36x≤−33y≥0
49
表达式50: "y" greater than or equal to StartFraction, 1 Over 50 , EndFraction left parenthesis, "x" plus 80 , right parenthesis squared left brace, "y" less than or equal to 10 , right bracey≥150x+802y≤10
50
表达式51: "y" equals 10 left brace, negative 102.3 6 less than or equal to "x" less than or equal to negative 57.8 2 , right bracey=10−102.36≤x≤−57.82
51
表达式52: "y" equals negative left parenthesis, "x" plus 80 , right parenthesis to the 4th power plus 50 left brace, "y" greater than or equal to 10 , right bracey=−x+804+50y≥10
52
表达式53: "y" equals 15 left brace, negative 100 less than or equal to "x" less than or equal to negative 82.5 , right bracey=15−100≤x≤−82.5
53
表达式54: "y" equals 15 left brace, negative 77.5 less than or equal to "x" less than or equal to negative 60 , right bracey=15−77.5≤x≤−60
54
表达式55: "y" equals 1.7 left parenthesis, "x" plus 109 , right parenthesis left brace, negative 100 less than or equal to "x" less than or equal to negative 81.5 , right bracey=1.7x+109−100≤x≤−81.5
55
表达式56: "y" equals negative 1.7 left parenthesis, "x" plus 51 , right parenthesis left brace, negative 78.5 less than or equal to "x" less than or equal to negative 60 , right bracey=−1.7x+51−78.5≤x≤−60
