1.

a.      y = 4x

 

x
y
-2
-8
-1
-4
0
0
1
4
2
8

b.      y = 4x

 

x
y
-2
0.0625
-1
0.25
0
1
1
4
2
16

c.      y = x2 + 1

x
y
-2
5
-1
2
0
1
1
2
2
5

 

d.       xy = 4

x
y
-2
-2
-1
-4
0
undefined
1
4
2
2

 

2. a. (i) B (ii) A (iii) E

b. 3x + 4y = 12 or y = -3x/4 + 3

c. (iii)

d. xy = C where C is a constant e.g. 4

e. x2 + y2 = 81

 

3. a.

x

y

-2

2

-1

4

0

undefined

1

-4

2

-2

b.

c. Hyperbola

 

4. a.

x

y

-2

0.11...

-1

0.33...

0

1

1

3

2

9

b.

c. Growth curve or exponential function.