What is the first ordered pair x-2y equals -7?

Answer 1

5

Answer 2

The question has two fundamental problems. They're both show-stoppers:

1). It asks for the "first" of something that extends infinitely in two directions,

but never tells where to start from.

2). There's no such thing as the "first" one anyway. The ordered pairs that satisfy

the equation can't be listed or numbered. If you give me two of them, then no matter

how close together yours are, I can always put another one in between them.

So if you write down one ordered pair and say it's the "first" one, I can always name

another one that's closer to the starting point than yours is.