I need help with this!

Answer:
Solution = Infinitely many
Step-by-step explanation:
y = -x + 1
y - 1 = -x
y = -x + 1
y = -x + 1 (Multiply by -1)
y = -x + 1
-y = x - 1
0 = 0
Since 0 = 0 is true, this is an identity solution that has an infinite set of solutions