The table below shows values for $\displaystyle {f{{\left({x},{y}\right)}}}$. x values are down the side, and y values are across the top. Use the table to evaluate $\displaystyle {f{{\left({1},{5}\right)}}}$.

y x	1	2	3	4	5
1	-8	-12	-16	-20	-24
2	-10	-14	-18	-22	-26
3	-12	-16	-20	-24	-28
4	-14	-18	-22	-26	-30
5	-16	-20	-24	-28	-32

$\displaystyle {f{{\left({1},{5}\right)}}}$ =