Question

1. solve by graphical method (just put answers here.. 1) x+y=3 ; x-y =4 2) x +y =0 ; 2x - y = 9

Answer 1

Answer:

sorry i first of all hate the subject maths i cant answer

Answer 2

We have 2x + 3y = k Putting x = 2 and y = 1 in 2x + 3y = k, we get 2(2) + 3(1) = k ⇒ 4 + 3 = k ⇒ 7 = k