LINEAR EQUATION IN 2 VARIABLES Express the following linear equations

This question was asked in Ex 4.2, 3 (i)

LINEAR EQUATION IN 2 VARIABLES Express the following linear equations in the form ax+by+c = 0 and indicate the values of a, b and c in each case.
1. -2x + 3y =0
2. x = 3y
3. 2x = -5y
4. 3x+2 = 0