Given 3 points A(-14,-8), B(-9,-5) and C(1, 1). Prove that A, B and C are collinear.

Linear Algebra: A Modern Introduction
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Section5.3: The Gram-schmidt Process And The Qr Factorization
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22:09 A O
arLTE1 ll
classroom.google.com/u/1/
4.
Given 3 points A(-14, -8), B(-9, -5) and C(1, 1). Prove that A, B and C are collinear.
B(-9,-4)
AG14,-8)
5. Suppose that A(-5, k), B(-1, 3) and C(-8, -1) are 3 vertices of an isosceles triangle with AB = AC.
Find the value of k.
A(-*,k)
Cc-e,-1)
6. B(p, -7) is a point lying on the line segment joining A(-8, -1) and C(3, g). If AB : BC = 9:2, find
the values of p and q.
A(-4,-1)
B(P
7 In the fioure AARC is rioht-anoled at R The coordinates of A Rand Cara (h 72 11 ond
II
Transcribed Image Text:22:09 A O arLTE1 ll classroom.google.com/u/1/ 4. Given 3 points A(-14, -8), B(-9, -5) and C(1, 1). Prove that A, B and C are collinear. B(-9,-4) AG14,-8) 5. Suppose that A(-5, k), B(-1, 3) and C(-8, -1) are 3 vertices of an isosceles triangle with AB = AC. Find the value of k. A(-*,k) Cc-e,-1) 6. B(p, -7) is a point lying on the line segment joining A(-8, -1) and C(3, g). If AB : BC = 9:2, find the values of p and q. A(-4,-1) B(P 7 In the fioure AARC is rioht-anoled at R The coordinates of A Rand Cara (h 72 11 ond II
22:12 A O
令
7. In the figure, AABC is right-angled at B. The coordinates of A, B and C are (h, 7), (-3, 1) and
(0, -5) respectively. Find the value of h.
* AB I BC
7. Slope f AB x dope of BC = - |
M-3,
Co, -5)
8. In the figure, a straight line L with slope -2 passes through the point P(5, -18). L cuts the y-axis at
A. Find the coordinates of A. (3
Let ACo, y)
PMS. -18)
9. In the figure, AB I DC. The coordinates of A, B and C are (0, 12), (-9, 0) and (7. -12) respectively.
Given that D lies on the x-axis.
(a) Find the coordinates of D.
(b) Prove that BC1CD.
4 (0, 12)
a) Let D(n,0)
97,-12)
II
Transcribed Image Text:22:12 A O 令 7. In the figure, AABC is right-angled at B. The coordinates of A, B and C are (h, 7), (-3, 1) and (0, -5) respectively. Find the value of h. * AB I BC 7. Slope f AB x dope of BC = - | M-3, Co, -5) 8. In the figure, a straight line L with slope -2 passes through the point P(5, -18). L cuts the y-axis at A. Find the coordinates of A. (3 Let ACo, y) PMS. -18) 9. In the figure, AB I DC. The coordinates of A, B and C are (0, 12), (-9, 0) and (7. -12) respectively. Given that D lies on the x-axis. (a) Find the coordinates of D. (b) Prove that BC1CD. 4 (0, 12) a) Let D(n,0) 97,-12) II
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