Find the equation for each of the followings items below:

a. A line that passes through (1, 1) and is perpendicular to the line 3x+4Y=12.

b. A line that passes through (5,4) and has a slope of 2.

c. A line that passes through (9,8) and has a slope of -1.

d. A line that passes though the points (1,2) and (12,24)

e. A circle with a radius of 9 and a midpoint at (3,3)

How would I even begin. I'm lost. Hope you can help.Cheers.