Question

Please answer these three questions. There are 3 images attached below and they apply to each question, in order.

1)
a) Is this a function? Why or why not?
b) What is the domain?
c) What is the range?


2)
a) Is this a function? Why or why not?
b) What is the domain?
c) What is the range?



3)
a) Is this a function? Why or why not?
b) What is the domain?
c) What is the range?

Answer 1

1a. It is because each x only has 1 y and it has an equation
1b. It is not a function because each x has more than 1 y.
1c. It is not a function because there can be no equation written for this graph.