If f(x) = x2 + 6x + 3, then which statement is true?
f(x) is increasing on the interval (-∞, -3).
f(x) is constant on the interval (-∞ , -3).
f(x) is decreasing on the interval (-∞ , -3)
f(x) is decreasing on the interval (-3,∞).
f(x) is constant on the interval (-3, ∞ ).

Question

If f(x) = x2 + 6x + 3, then which statement is true?
f(x) is increasing on the interval (-∞, -3).
f(x) is constant on the interval (-∞  , -3).
f(x) is decreasing on the interval (-∞ , -3)
f(x) is decreasing on the interval (-3,∞).
f(x) is constant on the interval (-3, ∞ ).

anonymous · Answer

use a graphing calculator or paste it to google to graph

x^2 + 6*x + 3

anonymous · Answer

the leading term is positive, so that means the function is something like this  |dw:1416200699891:dw|

anonymous · Answer

https://www.google.com/?gws_rd=ssl#q=x%5E2+%2B+6*x+%2B+3

anonymous · Answer

|dw:1416200806126:dw|