GMAT Data Sufficiency Question 26: Lines and intercepts

 
The following GMAT data sufficiency question tests your understanding of straight lines and intercepts in the $xy-$coordinate plane.

Question 26:

In the $xy$-plane, what is the slope of the line $y=mx+c$, where $mc \neq 0$ ?

1. (1) The $x$ and $y$-intercepts of the line are equal.
2. (2) The product of the $x$ and $y$-intercepts is equal to $1$.

1. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
2. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
3. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
4. EACH statement ALONE is sufficient.
5. Statements (1) and (2) TOGETHER are NOT sufficient.