Question

how to find the ordered pairs of x=7-y

Answer 1

pick any value you want

let's say you pick 0

if you replace y with 0 you get

x = 7 - y

x = 7 - 0

x = 7

which means that the ordered pair (7,0) is on this line

Answer 2

pick a few other values to plug into y to get other ordered pairs

Answer 3

x=7-3

Answer 4

so if y = 3, then x = 4 (since 7-3 = 4)

Answer 5

another ordered pair is (4,3)