Question

Which of the following describes the end behavior of y = -x^2+bx+c as x approaches either positive or negative infinity?
A) y approaches positive infinity
B) y approaches negative infinity
C) y approaches c
D) y approaches -c/b

Answer 1

The end behavior model of y is -x^2.
As x approaches either positive or neg infinity, -x^2 will always be negative.
Thus, "B) y approaches neg infinity" is the correct one. 
Hope that will help :))