There are an infinite number of ordered pairs.
Any point on the straight line which passes through (0,4) and has a gradient of -2 will be an ordered pair for the equation.
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(5,3)
{-4,-5}
x = -6 y = -11
x = 3 and y = 4 so the lines intersect at (3, 4)
The ordered pair is (3, 2).