Question

check (2,-1) is the solution of the equation x-2y=4​

Answer 1

Answer:

Step-by-step explanation:

(4,0)

The points which satisfies an equation are the solution of the equation.

x−2y=4

Putting(0,2) in the equation, 0−2×2=4⇒−4=4 which is not true.

Putting (2,0) in the equation, 2−2×0=4⇒2=4 which is not true.

Putting (4,0) in the equation, 4−2×0=4⇒4=4 which is  true.

Putting (  

2

​

,4  

2

​

) in the equation,  

2

​

−2×4  

2

​

=4⇒−7  

2

​

=4 which is not true.

Putting (1,1) in the equation, 1−2×1=4⇒−1=4 which is not true.

Thus, the solution of equation is (4,0).