The functions f and g are given as coordinate points.
Note that the first coordinates (x-coordinate) are the input values, while the second coordinates (y-coordinate) are the output values.
(a) Hence the coordinate point (4,3) of f(x) implies that:

(b) The coordinate point (2,-2) of g(x) implies that:

(c) The point (1/2,-2) of g(x) implies that:

(d) The coordinate point (3,1/2) of f(x) implies that:

(e) The coordinate point (-3,-2) of g(x) implies that:

(f) The coordinate point (π,0) of f(x) implies that:
