Which ones are correct?

Which undefined geometric term is described as a location on a coordinate plane that is designed by an ordered pair (x,y) ?

If g^-1(x) is the inverse of g (x) which statement must be true

Which equation shows the quadratic formula used correctly to solve 5x2 + 3x -4 0 for x? cos -3+ v (3) 2-4() 2(5) 3+ |(3)² +4() 205) 3+ (3) 2-4() -3+ v (3)² +4()