On your Own 1:
As a set of points: (-3, 2), (-2, -2), (-1, 1), (1, 0), (2, -1), (3, 2)
As a table:
| x | -3 | -2 | -1 | 1 | 2 | 3 |
| y | 2 | -2 | 1 | 0 | -1 | 2 |
D = {-3, -2, -1, 1, 2, 3}
R = {-2, -1, 0, 1, 2}
On your Own 2:
The relations in examples 1 - 3 are all functions
On your Own 3:
1. Yes, even though the x-value of 3 is used twice it is paired with a y-value of 7 both times. Therefore, it is still a function.
2. No, the x-value of -11 is paired with two different numbers (-10 and -9) so it is not a function .
3. Yes, again the x-value of 3 shows up twice, but 2 + 2 just another way of writing 4. So, the x-value has really only been paired with one y-value, 4, so it is a function.
On your Own 4:
1. y = 2x + 8
2. y = -3x + 30
3. y = 5x + 5