Question

How solve this Graphical Method of Solving Two Linear Equations?


1. x + y = 3 , 2x + 2y = 6
2. 5x + 3y = 0 , 2x - y = 0
3. 2x + y = 7 , 4x + 2y = 9
4. 4x + 5y = 7 , 4x - 5y = 3
5. 2x - 6y = 4 , 3x - 9y = 6

Answer 1

2. 5x+3y=0...............1

2x-y=0...................2

mul equation 2 by 3 , we get

6x-3y=0...............3

adding equation 1 and 3, we get

x=0

put x=0 in equation 2 , we get

y=0

similarly solve other equations