Question

(1) x + y = 5, 2x+2y= 10
(i) x-y=8, 3x – 3y = 16
(ii) 2x + y -6=0, 4x - 2y - 4 = 0)
(iv) 2x - 2y - 2 = 0, 4x - 4y - 5=0
which of the following pairs of the linear equation are consistent or inconsistent if consistent obtain the solution graphically ​

Answer 1

Answer:

1 ans x+y=5

x=5-y

, 2x+2y= 10

2(x+y) =10

x+y=10/2

x+y = 5

2 x-y=8

x=8+y

y=x-8

, 3x-3y= 16

3(x-y)= 16

x-y= 16/2

x-y = 8

2x+y-6=0

2x+y=6

2x=6-y

x=6-y/2

by putting in equation

2(6-y/2)+y-6

12-6y/2+y-6

6-6y/2+y-6

6y+y/2

3y+y=0

y=-3y.

3 Ans

2x-2y-2=0

2(x-y)=2

x-y=2/2

x-y=1

, 4x-4y-5=0

4(x-y) =5

x-y= 5/4.