HELP ASAP!!! WILL MARK BRAINLIEST IF RIGHT!

Mr. Mole left his burrow that lies 7 meters below the ground and started digging his way deeper into the ground, descending at a constant rate. After 6 minutes, he was 161616 meters below the ground.

Let y represent Mr. Mole's altitude (in meters) relative to the ground after x minutes.

Complete the equation for the relationship between the altitude and number of minutes.

y=