Mathematics

Problem

4. Which of the following pairs of linear equations are consistent/inconsistent? If consistent, obtain the solution graphically: (i)

x+y=5, \quad 2 x+2 y=10

(ii)

x-y=8, \quad 3 x-3 y=16

(iii)

2 x+y-6=0, \quad 4 x-2 y-4=0

(iv)

2 x-2 y-2=0, \quad 4 x-4 y-5=0