Write an equation of a vertical line passing through the point (5,-4). show all work.

How do i do this activity, is appreciated

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11

Can some one me with these questions