y = 650x is an illustration of a linear function
The function is given as:
[tex]y = 650x[/tex]
Where:
[tex]x \to[/tex] hours on the clock
Because x represents time, it cannot take a negative value.
So, the domain is [tex]x \ge 0[/tex]
Also:
x can take a whole number or decimal numbers
i.e. You can climb for 3 hours or part of an hour
When a data can take decimal, then such data is continuous.
Hence, the domain is continuous
See attachment for the graph of [tex]y = 650x[/tex]
Read more about domain and linear functions at:
brainly.com/question/4786835