The point at which f(x) = g(x) is where the graph of both f(x) and g(x) intersects.
From the graph we see that the x co-ordinate of the point of intersection is in the positive side therefore from the given options we can conclude that x coordinate is 3.
Now the y coordinate of the point of intersection is close to -20 and from the given option only -19 is appropriate therefore the required ordered pair is (3,-19)