Question

An equation in the system is y = x + 1. What is the other equation in the system if the solution is only at (0, 1)?
x − y = 1
2x + 2y = 4
x + y = 1
x + 2y = 2
Please just answer (:

Answer 1

Yes each equation: let x=0, and y=1

Answer 2

ex: x-y=1
0-1=1?
-1=1? no

Answer 3

test each to find the one which is true

Answer 4

a?

Answer 5

no, n=n to be true

Answer 6

so c?

Answer 7

x+y=1
0+1=1
1=1

yes

Answer 8

thank you!