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
kenny6666 [7]
2 years ago
9

The quadratic function below has an axis of symmetry through x = -4; a vertex at (-4, -9) and zeroes at x = -7 and x = 0.

Mathematics
1 answer:
Pavlova-9 [17]2 years ago
4 0

Answer:

True

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Here (h, k) = (- 4, - 9), thus

y = a(x + 4)² - 9

To find a substitute the coordinates of the zero (- 7, 0) into the equation.

0 = a(- 7 + 4)² - 9, that is

0 = 9a - 9 ( add 9 to both sides )

9a = 9 ( divide both sides by 9 )

a = 1, thus

y = (x + 4)² - 9 ← expand factor using FOIL

y = x² + 8x + 16 - 9

y = x² + 8x + 7

You might be interested in
How do I solve equation 24=2a + 6
algol [13]

Answer:

9

Step-by-step explanation:

24 - 6 = 18 divided by 2 is 9 so a must be 9

8 0
3 years ago
Pleaseee answer asap worth 17 pts
bija089 [108]
Speed=distance/time
average speed=(total distance)/(total time)

total distance=203+243=446
total time=3.5+4.5=8

average speed=(446)/(8)=55.75


answer is A
7 0
3 years ago
I NEED HELP ASAP!!!!
Advocard [28]

Answer:

The y-int. is 4 and the slope is 1/3

Step-by-step explanation:

4 0
3 years ago
the estimated population of the world was 1.6 billion in 1900 and 4.0 billion in 1975 what is the percent of increase
bogdanovich [222]
I'm not sure either!
6 0
3 years ago
A teacher that likes two different numbers p and q and states that p plus q equals 0 which statement could be true about these t
pychu [463]
D, one number is positive and the other is negative. The only way it could equal 0 is to cross the other out. An example is, -5+5=0
7 0
3 years ago
Other questions:
  • 5. TEMPERATURES The table shows the low temperatures in degrees Fahrenheit for the past week
    10·1 answer
  • Convert the given fraction into a decimal. 5/8
    8·1 answer
  • Four friends stay at the Pickled Parrot Hotel for a night and each
    12·1 answer
  • 7-14m=2m=5 please help​
    11·1 answer
  • 6. 21360<br>is written as __.​
    10·1 answer
  • 30 points<br><br> What is the opposite of cosine called and what is its triangle ratio
    11·1 answer
  • Larry's small business has $42,400 in its bank account and makes automatic monthly payments that total
    6·2 answers
  • Help! due in a min!<br><br>Find the angle measures for the following:<br>m&lt;1=___ m&lt;4=___​
    11·2 answers
  • Sử dụng tọa độ cực để tính giá trị tích phân sau:
    6·1 answer
  • 56°<br> 101°<br> Find the value of the missing angle a.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!