Co-ordinate Geometry Help Please

Is anyone able to help me with these questions ? they are most likely easy but im in a hurry as it is due tomorrow.

Cheers

1)

Find the equation of the line in the form ax + by + c = 0 that

a) passes through (-2,5) and has a gradient of 2/3

b) passes through (-2,6) and (-3,-7)

2)

Find the equation of the line that passes through (4,-7) and is parallel to y=3x-2

3) Find the equation of the line that passes through (-3,8) and is perpindicular to the line 3x-4y+2=0

Any help will be highly appreciated thanks.