The solutions of x2 – 2x – 1 = 0 are the points of intersection of two graphs. if one of the graphs is y = 2 + x – x2, find the second graph
-
A.
y = 1 – x -
B.
y = 1 + x -
C.
y = x – 1 -
D.
y = 3x + 3
Correct Answer: Option A
Explanation
The second graph is
((x^{2} – 2x – 1) + (2 + x – x^{2}))
= (1 – x)