Question

x + y = k
x - y = k

The solution to the system shown is _____.

(0, k)
(2, 2)
(k, 0)

Answer 1

x + y = k
x - y = k
---------add
2x = 2k -- divide both sides by 2
x = k

x + y = k
k + y = k
y = k - k
y = 0

x + 0 = k
x = k - 0
x = k

solution is : (k,0)......I think

Answer 2

@texaschic101 you are right

Answer 3

Thank you! =))