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Line $k$ has the equation ${x-3y}=9$ .

Line $\ell$ is perpendicular to line $k$ and passes through the point $(5,{-12})$ .

Find line $\ell$ ’s equation in both slope-intercept form and point-slope form using the given point.

An equation for $\ell$ in slope-intercept form is: .

An equation for $\ell$ in point-slope form is: .

You can earn partial credit on this problem.