Question

There's only one answer. Which one is it?

Answer 1

The second selection is correct.

Explanation:

Here is how you figure it out.

For the first and second selections, we must let `x = 0`:

`p(0) + qy = s`

`y = s/q`

The first selection is incorrect but the second selection is correct.

For the third and fourth selections, we must let `y = 0`

`px + q(0) = s`

`x = s/p`

This shows that the third and fourth selections are incorrect.