表达式27: "y" equals negative absolute value left parenthesis, 2 "x" , right parenthesis minus 5 left brace, negative 10 less than or equal to "y" less than or equal to negative 7 , right bracey=−abs2x−5−10≤y≤−7
27
表达式28: "y" equals absolute value left parenthesis, 2 "x" , right parenthesis minus 15 left brace, negative 15 less than or equal to "y" less than or equal to negative 10 , right bracey=abs2x−15−15≤y≤−10
28
表达式29: "y" equals negative 5 left brace, negative 19.5 less than or equal to "x" less than or equal to 19.5 , right bracey=−5−19.5≤x≤19.5
29
表达式30: "y" equals negative 15 left brace, negative 19 less than or equal to "x" less than or equal to 19 , right bracey=−15−19≤x≤19
30
Ears (hyperbola)
对学生隐藏该文件夹。
31
表达式32: StartFraction, left parenthesis, "x" , right parenthesis squared Over 475 , EndFraction minus StartFraction, left parenthesis, "y" minus 20 , right parenthesis squared Over 100 , EndFraction equals 1 left brace, 15 less than or equal to "y" less than or equal to 25 , right bracex2475−y−202100=115≤y≤25
32
Eyes (circles)
对学生隐藏该文件夹。
33
表达式34: left parenthesis, "x" minus 4 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 1x−42+y−232=1
34
表达式35: left parenthesis, "x" plus 4 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 1x+42+y−232=1
35
表达式36: left parenthesis, "x" minus 4 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 9x−42+y−232=9
36
表达式37: left parenthesis, "x" plus 4 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 4x+42+y−232=4
37
表达式38: left parenthesis, "x" plus 4 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 9x+42+y−232=9
38
表达式39: left parenthesis, "x" minus 4 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 4x−42+y−232=4
39
表达式40: left parenthesis, "x" plus 7 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 36x+72+y−232=36
40
表达式41: left parenthesis, "x" minus 7 , right parenthesis squared plus left parenthesis, "y" minus 23 , right parenthesis Superscript, 2 , Baseline equals 36x−72+y−232=36
41
Spots on Face (ellipses, circles)
对学生隐藏该文件夹。
42
表达式43: StartFraction, left parenthesis, "x" plus 15 , right parenthesis squared Over 4 , EndFraction plus left parenthesis, "y" minus 35 , right parenthesis squared equals 10x+1524+y−352=10
43
表达式44: left parenthesis, "x" plus 17 , right parenthesis squared plus left parenthesis, "y" minus 20 , right parenthesis squared equals 4x+172+y−202=4
44
表达式45: StartFraction, left parenthesis, "x" minus 15 , right parenthesis squared Over 4 , EndFraction plus StartFraction, left parenthesis, "y" minus 35 , right parenthesis squared Over 1 , EndFraction equals 10x−1524+y−3521=10
45
表达式46: left parenthesis, "x" minus 17 , right parenthesis squared plus left parenthesis, "y" minus 20 , right parenthesis squared equals 4x−172+y−202=4
46
表达式47: left parenthesis, "x" , right parenthesis squared plus left parenthesis, "y" minus 32.5 , right parenthesis squared equals 9x2+y−32.52=9
47
表达式48: StartFraction, left parenthesis, "x" plus 10 , right parenthesis squared Over 3 , EndFraction plus StartFraction, left parenthesis, "y" minus 4 , right parenthesis squared Over 1 , EndFraction equals 8x+1023+y−421=8
48
表达式49: StartFraction, left parenthesis, "x" minus 10 , right parenthesis squared Over 4 , EndFraction plus StartFraction, left parenthesis, "y" minus 4 , right parenthesis squared Over 1 , EndFraction equals 8x−1024+y−421=8
49
Nose (parabola)
对学生隐藏该文件夹。
50
表达式51: "y" equals negative 2.5 "x" Superscript, 2 , Baseline plus 18 left brace, 15 less than or equal to "y" less than or equal to 18 , right bracey=−2.5x2+1815≤y≤18
51
Mouth (parabola)
对学生隐藏该文件夹。
52
表达式53: "y" equals .0 3 5 "x" squared positive 7 left brace, negative 18 less than or equal to "x" less than or equal to 18 , right bracey=.035x2+7−18≤x≤18
