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.