Solution
- The constant rate is simply the constant value with which we add to the y-value or subtract from the y-value as x-varies.
- Observing the points on the table given, we can see that the y-values in the table seems to be reducing by a constant of 3 as x-values increase.
- Thus, the answers for the table are:

- Thus, the missing values are 30 and 24
- The table becomes:
- The graph is given below: