Question

which of the following is not a solution of the equation 2x+Y=7?(0,7)(1,4)(3/2,3)(5/2,2)​

Answer 1

Answer:

answer is Correct option is

C

(1,3)

We have to check whether these pairs satisfy equation 2x+y=7 or not. 

So, we will put these pairs one by one.

A) (1,5)⇒2×1+5=7 so, it satisfies.

B) (3,1)⇒2×3+1=7 so, it satisfies.

C) (1,3)⇒2×1+3=5 so, it does not satisfies.

D) (1,5)⇒2×0+7=7 so, it satisfies.

Option C is the correct option.

Answer 2

$(1,4) \: and \: ( \frac{3}{2} ,3) \:$

are not the solutions of the equations.

2×1+4=7

2+4=7

6 ≠ 7

Hence (1,4) is not a solution.

2×3/2+3=7

3+3=7

6 ≠ 7

Hence (3/2,3) is not a solution.