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)?
a) x − y = 1
b) 2x + 2y = 4
c) x + y = 1
d) x + 2y = 2

please help !

Answer 1

y = x + 1
and
x + y = 1
both contain the point (0, 1)

Answer 2

so its C ?

Answer 3

...yes.

Answer 4

yup