1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
musickatia [10]
3 years ago
5

Which statements about the graph of the function f(x) = –x2 – 4x + 2 are true? Check all that apply. The domain is {x|x ≤ –2}. T

he range is {y|y ≤ 6}. The function is increasing over the interval (–∞ , –2). The function is decreasing over the interval (−4, ∞). The function has a positive y-intercept.
Mathematics
2 answers:
Leto [7]3 years ago
8 0
The graph of the function f(x) =-x^2-4x + 2 is parabola with branches going down in the negative direction of y-axis. 
The vertex of parabola has coordinates:

x_v=\dfrac{-(-4)}{2\cdot(-1)}=-2, \\ y_v=-(-2)^2-4\cdot (-2)+2=-4+8+2=6

Then you can conclude that all x are possible, that means that the dimain is x\in (-\infty,\infty) and the maximum value of y is at the vertex, then the range is (-\infty,6].The function is increasing for x<-2 and decreasing for x>-2 (since vertex is the maximum point).
When x=0, y=2. 
Hence,
<span>The domain is {x|x ≤ –2} - false.
</span>
<span>The range is {y|y ≤ 6} - true.
</span>
<span>The function is increasing over the interval (–∞ , –2) - true.
</span>
<span>The function is decreasing over the interval (−4, ∞) - false.
</span>
<span>The function has a positive y-intercept - true.</span>









Alex_Xolod [135]3 years ago
5 0

Answer:

The range is {y|y ≤ 6}

The function is increasing over the interval (–∞ , –2)

The function has a positive y-intercept

You might be interested in
Help please help help help
Artyom0805 [142]

Answer:

d

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Which set of measurements can represent the lengths of a triangle's sides?
zepelin [54]
Triangle, not a triangle, not a triangle, triangle

Determining if three side lengths can make a triangle is easier than it looks. All you have to do is use the Triangle Inequality Theorem, which states that the sum of two side lengths of a triangle is always greater than the third side. If this is true for all three combinations of added side lengths, then you will have a triangle.[
6 0
2 years ago
Justin needs 9 pieces of rope that are
maria [59]

Answer:

no.

Step-by-step explanation:

half of 9 ft is 4.5 ft, 9 + 4 and 1/2 is 13 1/2

7 0
2 years ago
1. On her birthday, Shruti bought 2 kg sweets and distributed 1 kg 500 g among her classmates. How much sweets were left with he
uysha [10]

Answer:

500g

Step-by-step explanation:

since she brought 2 kg of sweets, and distributed to her classmates, that means we wil sustract 2 from 1,5 and that will be 0.5 or 500g

I hope I helped you! :)))

7 0
2 years ago
Read 2 more answers
A rectangle has an area of 16in^2 and a perimeter of 20 in. Find the dimension of the rectangle.
Anni [7]

Answer:

8 in x 2 in

Step-by-step explanation:

8 x 2 = 16

8 + 8 + 2 + 2 = 20

3 0
3 years ago
Other questions:
  • PLEASE HELP ASAP!!!!! WILL GIVE BRAINLEST TO CORRECT ANSWER
    10·2 answers
  • Assume that the sales of a computer retail store are approximated by a linear function. Sales were $990,000 in 1983 and $2,830,0
    7·2 answers
  • Consider the functions.
    10·2 answers
  • 34 &lt; 5x + 9 &lt; 44<br> Inequality
    7·1 answer
  • 15 ft above sea level
    6·1 answer
  • HELP OUT PLEASE!!!!
    13·1 answer
  • SOMEONE, PLEASE HELP ME OUT!!!!!! WILL MARK BRAINLIEST
    8·1 answer
  • The ______ of the degrees of each factor is
    15·2 answers
  • Do you have to change the division to multiplication on a decimal?
    5·2 answers
  • If m = 2, find the value of m+3.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!