Write the equation of a line in point-slope form: y=m(xx1)+y1\displaystyle {y}={m}{\left({x}-{x}_{{1}}\right)}+{y}_{{1}}, using the given information.

 (8,5)\displaystyle {\left({8},{5}\right)}, (17,5)\displaystyle {\left({17},-{5}\right)}