Question

I don't under stand how to do it​

Answer 1

They are points on a graph. Just put the points on a graph. There's no math to it, really.

Explanation:

F(2, -6)

F(x, -y)

and

G(8, -5)

G(x, -y)

Answer 2

What is the question asking? Those are just two points on a graph.
F: 2=x and -6=y
G: 8=x and -5=y