Count the number of marks from one given number to the next.

There are four marks from $0$ to $12$. How much does each mark represent?

If four sections represent a total of $12$, then each unit must represent $3$.

Use the knowledge that the marks are made every $3$ integers to determine what A, B, and C represent.

D represents $−350$. Why does that make sense? Now use that to figure out the values of the other points.