Correct. Given the points (1, 3) and (5, 2), the distance between them is $\displaystyle\sqrt{{{{\left({x}_{{1}}-{x}_{{2}}\right)}}^{{2}}+{{\left({y}_{{1}}-{y}_{{2}}\right)}}^{{2}}}}=\sqrt{{{{\left({1}-{5}\right)}}^{{2}}+{{\left({3}-{2}\right)}}^{{2}}}}=\usepackage{cmbright}\Huge\$ $\displaystyle\sqrt{{{{\left(-{4}\right)}}^{{2}}+{{\left({1}\right)}}^{{2}}}}=\sqrt{{{16}+{1}}}=\sqrt{{{17}}}\usepackage{cmbright}\Huge\$ .