德望學校 – S1數學 1B Chapter 10 Introduction to Coordinates – CQ (11-16)

試卷答案:

1. a) p = (0, -2)
   b) 70 (sq. units)
2. 
   
3. x = 2, y = -2
4. a) (0, 4)
   b) 16 (sq. units)
   c i) (4, -8)
     ii) 100 (sq. units)
5. 4.5 (sq. units)
6. x = 6, y = -3
7. a) 7
   b) 145°
8. a) 25 (sq. units)
   b) For c > 2, c = 7
        For c < 2, c = -3
9. a) (8, 5)
   b) 44 (sq. units)
   c) k = -3 or 8
10. a) D (2, -m – 2)
    b) (-7, 2)
11. a) P = (8, 130°)
    b i) 90°
       ii) 20 (sq. units)
12. a) (3, 1)
    b) 18 (sq. units)
13. a) A’ = (0, 3), B’ = (-3, -5)
    b) 6 (units)
14. a) –
    b) 29 (sq. units)
15. a) 18 (sq. units)
    b i) (20, -2)
       ii) 18 (sq. units)
16. a) Number of axes of reflectional symmetry = 0
         Order of rotational symmetry = 4
    b i) (-7, 0)
       ii) 13 (units)
17. a) 90°
    b) 7 (sq. units)
18. a) (7, 2)
    b) 60 (sq. units)
    c) 15 (sq. units)

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