Question

Check whether (1,-2) is a solution of 2x- y=6

Answer 1

Answer:

if x=1 and y= -2

then....

L. H. S.,... 2x -y

=2.1 - (-2)

= 2+2

=4 ≠6 R. H. S (prove)

Step-by-step explanation:

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Answer 2

Answer:

2x−y=6

2x=6+y

(A) (3,0)

LHS=2x−y

=2(3)−06=6RHS

(3,0) is a solution

(B) (0.6)

LHS=2xy⇒2(0)−6⇒−6



=RHS

(o,6) is not a solution

(C) (2,−2)

LHS2(2)−(−2)⇒6⇒RHS

(2,−2) is asolution

(D) (

3

,0)

LHS:2(

3

)−(0)=2

3



=RHS

(

3

,0) is not a solution

(E) (

2

1

,−5)

LHS:2(

2

1

)−(−5)⇒1+5⇒6=RHS

(

2

1

,−5) is a solution.

Step-by-step explanation:

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