Mappings and Functions
1. 26
2. -1
3. yes
4. 1;1
5. no
6. 4; -4
7. (4,0)
8. (2,3)
9. (0,2)
10. (-1,-3)
11. rad13
12. rad13
13. (-4,3)
14. (4,0)
15. yes
16. (1,3)
17. (-5,-6)
18. (7,2)
19. (-11,-4)
20. 3rad10; 3rad13
21. 3rad13; 6rad10
22. (1,8)
23. (-1,-5)
24. no
Reflections, Translation,…
1. (-3,-2)
2. (-4,1)
3. (3,0)
4. (5,2)
5. (2,-3)
6. (-2,-1)
7. (0,3)
8. (-2,0)
9. (3,-2)
10. (5,2)
11. (6,-2)
12. (1,-2)
13. 1 unit down;(4,2);
(-3,3)
14. 2,6
15. -2,-2
16. -1,5
17. a. (-2,3); (1,7);(3,2)
b. (3,-2);(7,1); (2,3)
18. a. (0,5);(-4,4); (-3,-2)
b. (0,5); (4,4); (3,-2)
Rotations and Dilations
1. subO,-330 or 390 (answers may vary)
2. subO, 315 or 315 or -405
3. subO, -40 or 680
4. subO, 350 or -370
5. subO, -180 or ΗsubO
6. subO, 90 or -270
7. C
8. B
9. G
10. F
11. A
12. F
13. (4,8); (8,0); (8,-4)
14. (-1,-2); (-2,0); (-2,1)
15. (6,12);(12,0);(12,-6)
16. (4,-1)
17. (4,12)
18. 3, expansion
19. 1over4, contraction
20. 4, expansion
21. 2, expansion
22. -1over4, contraction
23. -4, expansion
24. a. 1:4
b. 1:16
Composites
1. 28
2. 100
3. 9x^2+6x+1 or (3x+1)^2
4. D
5. A
6. C
7. D
8. C
9. D
10. a,b,c
11. b,d
12. a. (2,0); (1,3); (0,-1)
b. (2,0); (1,3); (0,-1)
c. yes
d. x-1; y-1
13. 1over2
14. 3
15. 5
16. B
17. C
18. D
19. E
20. D
21. A
22. S^-1: (x,y)→(x-1,y-3)
23. S^-1:(x,y)→(halfx,halfy)
24. S^-1: (x,y)→(x-3,thirdy)
Symmetry
1. a. one;b.no;c. none
2. a. 2; b. yes; c.subO,180
3. a. 4; b. yes; c.subO,90;subO,180
4. a. 5;b.yes;c.subO,72;
subO,144;subO,216;
subO,288
5. a.1;b.no;c. none
6. a.6;b.yes; c.subO,60;
subO,120;subO,180;
subO,240, subO,300
7. a. 6 lines through opp vertices &midpts
b. rotation about the center of 60°,120°,180°, 240°,300°
8. a. 5 lines through a vertex & the midpt of the opp side
b. rotation about the center of 72°,144°,216°, 288°
9. a. 4 lines throught the diagonals & ^bisectors of the sides
b. rotation about the center of 90°,180°, 270°
10. a. 8 lines the ^bisect of the opp sides &bisect of the opp Ðs
b. rotation about the center of 45°,90°,135°, 180°,225°,270°,315°
Transformations
1. 7
2. 7
3. no
4. (5,-2)
5. (1,2)
6. (-4,-1)
7. A or (5,2)
8. 4,5; -2,-1
9. 6rad2; 6rad2
10. (4,1)
11. a. (-4,4); b. (1,-1)
12. graph
13. graph
14. big plus sign with circles on the ends; 4
15. (x+1, y-2); (x,y)