1
|
a.
|
(3, 1) |
b.
|
(3, 1) |
c.
|
(1, 6) |
d.
|
(1, 2) |
e.
|
(8, 3) |
f.
|
(5, -2) | |
g.
|
(1, -1) |
h.
|
(3, 1) |
i.
|
(9, 3) | |
j.
|
(2, 2) |
k.
|
(4, 1) |
l.
|
(2, -2) | |
m.
|
(3, 1/3) |
n.
|
(5, -1) |
o.
|
(-1, -3) | |
2
|
a.
|
(4, 16) and (1, 1) |
b.
|
(-3, -1) and (1, 3) |
c.
|
(-4, 3) and (-3, 4) |
d.
|
(0, -3) and (12/5, 9/5) |
e.
|
(6, 1) and (-1, -6) |
f.
|
(-1/2, 2) and (-1, 1) | |
g.
|
(5, 8) |
h.
|
(-3, -2) and (2, 3) |
i.
|
(4, 2) and (-2, -4) | |
j.
|
(-2, 1) |
k.
|
(16/3, 4) and (4/3, -2) |
l.
|
(6, 0) and (-2, 16) |
3. A pie costs $2 and a coke costs $2.
4. A small photograph costs $3 and a large photograph cost $8.
5. Three CDs and four tapes cost $168.
6. The two numbers are 38 and 74.
7. A crayfish costs $24.
8. A kg of bananas costs $2 and a kiwifruit costs 50 cents.
9. The two numbers are 100 and 68.
10. The number is either 2 or -8.