Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case :

x = 3y

Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case :

2x = -5y

Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case :

y - 2 = 0

Express the following linear equations in the form ax + by + c = 0 and indicate the values of a, b and c in each case :

5 = 2x