Parallel and Perpendicular Lines

Question 1:

Find the equation of a line parallel to the line y = 1 3 x-4
through (1,9)
y = 1 3 x+ 28 3

Question 2:

Find the equation of a line perpendicular to the line y = 1 2 x-2
through (-7,1)
y =2 x+15

Question 3:

Find the equation of a line parallel to the line y = 1 4 x+9
through (-9,10)
y = 1 4 x+ 31 4

Question 4:

Find the equation of a line parallel to the line y = 1 2 x-10
through (8,3)
y = 1 2 x1