The equation of the relationship between Mr. Mole's elevation relative to the ground is [tex]y = -3x -5[/tex]
From the question, we have the following parameters
A linear equation is represented as:
[tex]y = mx + b[/tex]
Where:
So, the function is:
[tex]y = -3x -5[/tex]
See attachment for the graph that represents [tex]y = -3x -5[/tex]
Read more about linear functions at:
https://brainly.com/question/15602982