Question

Determine the domain and range of the quadratic function f(x)=−6(x+1)2−9
.(1 point)

domain R
; range y≤9


domain R
; range y≥−9


domain R
; range y≤−9


domain R
; range y≥9

Answer 1

Domain: all real numbers (R).
Range: y ≤ −9.

Reason: vertex at (−1,−9) and coefficient −6 < 0 so the parabola opens downward, giving a maximum of −9.