Question

I NEED HELP!

1. Is {(1, 1), (1, 2), (1, 3), (1, 4)} a function?
a. Yes
b. No

2. Select the sets that are not functions. (CHECK ALL THAT APPLY)
A = {(1, 2), (2, 3), (3, 4), (4, 5)}
B = {(1, 2), (2, 1), (3, 0), (4, -1)}
C = {(-1, 3), (0, 3), (1, 3), (2, 3)}
D = {(1, 1), (1, 2), (1, 3), (1, 4)}
E = {(6, 2), (7, 3), (6, -1), (5, 4)}

3. If K = x - y = 5, find the corresponding range of y for the domain {0, 2, 4}.
a. {-5, -3, -1}
b. {0, 2, 4}
c. {5, 7, 9}

4. If K = x - y = 5, is Set K a function?
a. Yes
b. No

5. Is B = {(1, 2), (2, 1), (3, 0), (4, -1)} a function?
a. Yes
b. No

Answer 1

1: No the following is not a function

2: A and E both are not functions

3: the corresponding range of y for the domain [0, 2, 4]

4: yes it is a function

5: no its not a function

Answer 2

1. no
2.a,e
3.b.{0, 2, 4}
4.Yes
5.No