F K = {(x, y) | x - y = 5}, is Set K a function?

Yes, because the linear function  x - y = 5 is a function

Step-by-step explanation:

x - y = 5  can look like   y = x - 5  with slope 1 and y-intercept -5

so this is a function  which makes set K a function.

7,24

step-by-step explanation:

what's the question?

step-by-step explanation:

there is no question.