If 3x − 4y = 12, which ordered pair does not represent a solution to the equation and does not represent a point on the graph?

Can someone me out here number 4 plz

How many terms does the polynomial x^2 y^2 have

The length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?