is (3,4) an ordered pair of the relation y=−2/3x+6?

To check if (3,4) is an ordered pair of the relation y = -2/3x + 6, substitute x = 3 and y = 4 into the equation and see if it is true.

4 = (-2/3)(3) + 6
4 = -2 + 6
4 = 4

Since the equation is true, (3,4) is indeed an ordered pair of the relation y = -2/3x + 6.