Question

Any answers to these of domain and range and the bottom too.

Answer 1

7. Both are all real numbers

8. Domain is all real and range is -2, +∞

9. Domain is -2<x<2 and range is -3<y<3

10. Domain is all reals and range is -1<y<1

11. Is a function

13. Is not a function

14. Is not a function

15. Is not a function

16. Is a function

17. Is not a function

18. Is a function

19. Is not a function

Explanation:

Answer 2

Explanation:

7. Domain = All real numbers; range = all real numbers

8. Domain All real numbers. range all real values of y ≥ -2

9. Domain -2 ≤ x ≤ 2; Range -3 ≤ y ≤ 3

10. Domain All real numbers; range -1 ≤ y ≤ 1

As for the other questions All are functions except 13, 14 , 15, 17 and 19.

we see that 13, 14 and 15 are one-to many relations and so are 17 and 19 - in these last 2 cases we also see that their graphs fail the vertical line test. ( You can draw a vertical line which passes through 2 points on the graph.).