I am sorry but the question is incomplete. You have not mentioned the ordered pairs and the equation is incomplete as well.
There are infinitely many ordered pairs. One of these is (0, 0).
3x
There are an infinite number of ordered pairs that satisfy the equation.
They are all the pairs you make where (x = any number) and (y = 4).
13
1,6 2,12 3,18 4,24 5,30
15
7
The solution set for a linear equation in two variables comprises an infinite number of ordered pairs, and these are defined by the equation that appears in the question!
There are infinitely many ordered pairs: each point on the straight line defined by the equation is an ordered pair that is a solution. One example is (0.5, 2.5)
(1, 0.2), (2, 0.1)