Question

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

Answer 1

Answer:

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

Step-by-step explanation:

Answer 2

Answer:

Step-by-step 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.).