need help on these questions Write the equation of the line that passes through the given point and is perpendicular to the given line. Your answer should be written in slope-intercept form.

P(3, −4), x = − 7/8y + 3

2.Write an equation of a line that passes through the two given points. Your answer should be written in slope-intercept form.
P(6, 0), Q(7, −5)

3.Write an equation of the line with the given properties. Your answer should be written in standard form.
m is undefined passing through P(−7, −9) please just dont leave me with a half answer