Question

x+y=0
x-y=k
If the ordered pair (1, p), where x=1 and y=p, is a solution of both equations above, then what is the value of k?

Answer 1

saki did u try to plug it in?

Answer 2

since x=1 right? plug it in to x+y=0 which will be like 1+y=0 and ull know what y is

Answer 3

Yup! I plugged it in

Answer 4

wait

Answer 5

0?

Answer 6

Wait, I get two.
Because for the top equation 1+p=0, I moved the 1 to the other side, so it became p=-1 and then I plugged it into 1-p=k. So it became 1-(-1)=2

Answer 7

its 1+y=0 so u move the 1 to other side which will be -1 when he moves to other side
so it'll be like