Question

Solve x + 3y = 7 if x and y must be whole numbers.
How do I do this?

Answer 1

Here are the answers they gave me:

A.
{(0, 5), (1, 3), (2, 1)}

B.
{(2, 1), (1, 4), (0, 7)}

C.
{(1, 2), (4, 1), (7, 0)}

D.
{(0, 5), (1, 4), (2, 1)}

Answer 2

I think its C.

Answer 3

How can I check?

Answer 4

Replace the values, for every set of values, the equation must be satisfied.

Answer 5

That's what I have so far, but since x and y needs to be a whole number, idk what to do next

Answer 6

first what kind of question is that

Answer 7

What do you mean?

Answer 8

Wait, I think I get it! Thanks everyone :)