Write a (5000) = 12 as an ordered pair

The ordered pair is (5000,12). This is given from the function a at x=5000, which is written in the question as a (5000) = 12. Here, a is our dependent variable and is equal to 12. The x value, or independent variable is given as 5000. Ordered pairs are written (x, y) or (independent, dependent), thus the ordered pair is (5000,12).