You are right, the question is not given correctly.  For the point $B$, the intended coordinates are $(2, y_B)$ , and we want to find out $y_B$.

Here is the corrected question:

The line given by $\displaystyle \frac{x - 4}{2} = \frac{y - 5}{13}$ goes through point $B = (2, y_B)$. What is $y_B$?