Question

find whether (√2,3√2) is a solution of x -3y=9 or not​

Answer 1

let us take x=root2

y=3root2

putting valuess in eq. x-3y=9

root2 - 3(3root2 ) =9

so we will get ,

root2 - 9root2 = 9

here, 8root2 =9

hence lhs is not equal to rhs so its it's not a solution.