Question

Given: F = {(0, 1), (2, 4), (4, 6), (6, 8)} and G = {(2, 5), (4, 7), (5, 8), (6, 9), (7, 5)}

(F - G) (6) =

Answer 1

Try using the law that states (f-g)(6)= f(6)-g(6).
Does this help?

Answer 2

-3
-1
3
it's got to be one of these answers

Answer 3

Well f(6)-g(6)= 8-9=-1.
All you have to do is look at the x-values of f that are equal to 6 and then write down the corresponding y values for that x to get it and the same for the g values.