Answer:

Step-by-step explanation:
Let d represent the number of pizza delivery days.
We have been given that a pizza delivery worker drives the motor scooter only on days he is working, during which he drives an average of 50 miles per day. So the number of miles driven in d days will be 50d.
As the delivery worker purchased a used motor scooter that had been driven 12,100 miles. This means that initial value or y-intercept will be 12,100.

Upon substituting our given values we will get,

Therefore, the equation
models the total number of miles driven in d days of pizza delivery.
You can approach this question by writing the function as y=… as I did in the photo. Then rearrange to make x the subject. Lastly, swap the ys for xs and write as I did on the final line of my working. If you like I can explain how to rearrange the equation or answer any other questions but I think you should be able to see
<span>length of the line segment does not change. you are just moving it 2 units to the right. answer would be 4 units</span>
Might be wrong but y=2-2x