There are any number of ordered pairs that work for this equation. Below are some examples.
(0, -18) (2, -10) (5, 2)
In order to find these and any others, you simply select a value for x and plug into the equation to find y. Below is an example.
y = 4x - 18
y = 4(0) - 18
y = 0 - 18
y = -18
(0, -18)