60.8k views
0 votes
The graph of the function f(x) = (x-4)(x + 1) is shown

below.
4-2
64
Mark this and return
6
2
T
6
2
6
X
Which statement about the function is true?
The function is increasing for all real values of x
where
x<0.
O The function is increasing for all real values of x
where
x < -1 and where x > 4.
O The function is decreasing for all real values of x
where
-1 < x < 4.
O The function is decreasing for all real values of x
where
x < 1.5.

User JCBrown
by
8.5k points

1 Answer

6 votes

Answer: The function is decreasing for all real values of x where x < 1.5.

Explanation:

The axis of symmetry is
x=(4-1)/(2)=1.5

Since the coefficient of
x^2 is positive, the graph opens upwards.

So, the function is decreasing for all real values of x where x < 1.5.

User Urs Meili
by
7.9k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories