Question

Find out which of the following equation have x = 3 ,y = - 2 as a solution :
(i) 3x - y = 11
(ü) 5x + 3y = 9
(iii) 4x – 3 = 2y + 11
(iv) 7x - 9 + 5y + 1 = 0
(v) 2y + 5 + x = 4
(vi) 7x + 3y + 15 = 0​

Answer 1

Step-by-step explanation:

option b.... 5*3+3*(-2)

15-6=9 so option b is correct

option 5 .... 2*(-2)+5+3

-4+5+3

1+4=4

Answer 2

Answer:

1 and 2

Step-by-step explanation:

(i) 3x - y = 11

On substituting the values,

= 3(3) - (-2) = 11

= 9 + 2 = 11

= 11 = 11

Yes, x = 3 and y = -2 is the solution of this equation.

(ii) 5x + 3y = 9

= 5 (3) + 3 (-2) = 9

= 15 + (-6) = 9

= 15 - 6 = 9

= 9 = 9

Yes, x = 3 and y = -2 is the solution of this equation.