Question

Write the solution of x+y=0 and 2x-y=9
1. (2,-2)
2. (3,-3)
3. (-2,2)
4. (6,3)​

Answer 1

Answer:

(3,-3)

Step-by-step explanation:

$x + y = 0$

$x = - y$

$2x - y = 9$

$- 2y - y = 9 \\ - 3y = 9 \\ y = 9 \div - 3 \\ y = - 3$

$x = - y \\ x = - ( - 3) \\ x = 3$

Answer 2

Answer:

3+-3=0

2*3-(-3)=9

so

optn 2.(3,-3)