Question

Is (1, 1) a solution to this system of equations?11x+3y=184x+y=5

Answer 1

system of equations (1,1)

put value of these x and y in equations

(x , y) = ( 1,1)

so this solution not satisfied equation 1

11( 1)  + 3 (1)  = 18

so 11 + 3 =  18

   15   = 18 ( Left side not equal to right side )

  (1,1) is not solution for 11x+ 3y=18

2.     4x+y = 5

put values (1,1)

4(1)   + (1)    =  5

 5    =   5   {  left side =  right side )

so (1,1) is solution for 4x +y=5