Question

x + y = k
x - y = k

The solution to the system shown is _____.


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

got b

Answer 1

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

k+y=5
y=0
x-0=k

\(\large{\color{blue}{(k,0)}}\)

Answer 2

5+y=k*
Silly typo in the 4th line.