Exercise 20 Page 159

The x- and y-intercepts occur at the points where the function crosses the x- and y-axes, respectively. At the x-intercept, y is 0. Similarly, at the y-intercept, x is 0. From the table, we can identify these coordinates.

x	y
- 3	- 1
- 2	0
- 1	1
0	2
1	3

We can see that when x=0, y=2. This means that our y-intercept is 2. We can also see that when y=0, x=- 2. Therefore, our x-intercept is - 2.