[tex] distance = | \frac{(- 4 \times 1) + (- 1 \times 1)-7}{ \sqrt{ {( - 4)}^{2} + {( - 1)}^{2} } } | \\= \frac{ - 12}{ \sqrt{17 } } \\ = \frac{ - 12 \sqrt{17} }{17} \\ = - 2.91[/tex]
