In y = k/x with k non-zero, which variables can never equal zero?

Question

Accepted Answer

C. Both x and y

1. x cannot be zero because k/x would be undefined.
2. If y were zero, then xy = k would give 0 = k, but k is non-zero.
3. So neither x nor y can be zero.
_Source: Wikipedia, Proportionality (mathematics), Inverse proportionality_

Answer

Only x

Answer

Only y

Answer

Neither

In y = k/x with k non-zero, which variables can never equal zero?

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