Question

x=2 , y= -1 is a solution of the linear equation *

options


x+2y = 0

x+2y = 4

2x+y =0

2x + y = 5​

Answer 1

Answer:

x+2y = 0

Step-by-step explanation:

x=2 , y= -1

(2) + 2(-1) = 0

2 +(-2) = 0

2-2 = 0

0 = 0

Therefore, it satisfies the 1st equation.

Answer 2

Answer:

x = 2 and y = - 1 is a solution of the linear equation x + 2y = 0 among the given options.

Explanation

Putting these values in several equations ,we check whether LHS = RHS or not.In these way,we get one of the line passing through given point.

x + 2y = 0

=> 2+2(-1) = 0

Hence, LHS = RHS = 0 . The first equation satisfies LHS and RHS and therefore it passes through (2 ,-1).

Additional details

• There can be infinite line passing through (2,-1). This line is one of them

• Similarly, infinite points satisfy the relation x + 2y = 0 ,(2,-1) is one of them.