solve the pair of linear equation with graph 2x-y= 5 , 2x +y =-1​

2 thoughts on “solve the pair of linear equation with graph 2x-y= 5 , 2x +y =-1​”

1. Given Equation

   ⇒2x – y = 5 (i)

   ⇒2x + y = -1 (ii)

   Now Take

   ⇒2x – y = 5 (i)

   When x = 0

   ⇒2(0) – y = 5

   ⇒y = -5

   We get point (0 , -5)

   When y = 0

   ⇒2x – 0 = 5

   ⇒2x = 5

   ⇒x = 5/2

   We get point (5/2 , 0 )

   Now Take

   ⇒2x + y = -1 (ii)

   When x = 0

   ⇒2(0) + y = -1

   ⇒y = -1

   We get point (0 , -1)

   When y = 0

   ⇒2x + 0 = -1

   ⇒2x = -1

   ⇒x = -1/2

   We get point (-1/2 , 0)

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2. Answer:

   x=1 y=-3

   Step-by-step explanation:

   2x-y=5 eq1

   2x+y=-1 eq2

   From eq 1 and 2, add them, we get,

   2x-y=5

   2x+y=-1

   4x=4

   x=1

   From 1,we get,

   2*1-y=5

   -y=3

   y=-3

   Reply