(a) Note : y is not defined for x = 0, due to division by 0
Hence, x = 0 is not in the domain
(b) determine the values in the table
| x | -4 | -3 | -2 | -1 | 1 | 2 | 3 | 4 |
| y | 3/4 | 2/3 | 1/2 | 0 | 2 | 3/2 | 4/3 | 5/4 |
(c) Check what happens between x = -1 and x = 1:
when x = 
,
y = -1
when x = 
,
y = 3
(d) As x gets closer to 0, the points get closer to the y-axis, although they do not touch it. The y-axis is called an asymptote of the curve.