1. Given that A(6, n+1) is the reflection of B(m-3,-2) about the x-axis,
(a) find m and n,
(b) write down the coordinates of A and B.
2. Given that C(p+5, 1) is the reflection of D(3, q-2) about the y-axis,
(a) find p and q,
(b) write down the corrdinates of C and D.
Maths Questions
2007-05-12 10:37 pm
回答 (2)
2007-05-13 12:16 am
✔ 最佳答案
1a) 6 = m - 3, m = 9
n + 1 = - (-2), n = 1
1b)
A (6,2) and B(6,-2)
2a)
p + 5 = -3, p = -8
1 = q - 2, q = 3
2b)
C(-3,1) and D(3,1)
3a)
x + 4 = - (-2), x = -2
-5 = - (y + 3), y = 2
3b)
E(2,-5) and F(-2,5)
4)
clockwise turn by 2 * arctan(0.5) + 90 deg.
then 伸長 by 1.5
好複習, 事實呢題係有難度...(對你程度黎講)
2007-05-12 10:45 pm
1a.n+1=-2 (x), 6=m-3 (y)
m= -3.n= -3
b.A(6,-2) B(-6,-2)
2a p+5=3, 1=q-2
p=-2, q=3
b.C(3,1) D(3,1)
m= -3.n= -3
b.A(6,-2) B(-6,-2)
2a p+5=3, 1=q-2
p=-2, q=3
b.C(3,1) D(3,1)
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