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
liq [111]
3 years ago
12

The vertex of this parabola is at (-4, -1). When the y-value is 0, the x-value is 2. What is the coefficient of the squared term

in the parabola's equation?
Mathematics
1 answer:
satela [25.4K]3 years ago
5 0
\bf \qquad \textit{parabola vertex form}\\\\
\begin{array}{llll}
\boxed{y=a(x-{{ h}})^2+{{ k}}}\\\\
x=a(y-{{ k}})^2+{{ h}}
\end{array} \qquad\qquad  vertex\ ({{ h}},{{ k}})\\\\
-------------------------------\\\\
y=a(x-(-4))^2-1\implies y=a(x+4)^2-1
\\\\\\
\textit{now, we also know that }
\begin{cases}
y=0\\
x=2
\end{cases}\implies \underline{0}=a(\underline{2}+4)^2-1

solve for "a"
You might be interested in
A moving company charges $840 plus $17 per hour. Another moving company charges $760 plus $22 per hour.how long is job that cost
adoni [48]
1. Make an equation.
Moving company #1: y = 17x + 840
Moving company #2: y = 22x + 760

2. Put the equations together and solve
17x + 840 = 22x + 760
-17x            -17x
840 = 5x + 760
-760        -760
80 = 5x 
5       5
16 = x

When a job is 16 hours they both charge the same thing.
5 0
4 years ago
57 divided by 4722 plss helpppp
Angelina_Jolie [31]

Answer:

0.0120711563

Step-by-step explanation:

7 0
2 years ago
What system of equation represents this situation?
Mashutka [201]

Answer:

It's choice A.

Step-by-step explanation:

Kevin is 3 years older than Daniel gives:

k = d + 3.

2 years ago kevin is  aged k - 2 and daniel d - 2  years.

So:

k - 2 = 4(d - 2).

8 0
3 years ago
Just need a little help
CaHeK987 [17]
2/3x + 6 - 1/3x -4 = -6
1/3x + 2 = -6
1/3x = -6 - 2
1/3x = -8
x = -8 * 3
x = -24

5 0
3 years ago
Can anybody teach me about functions domains and range?
sergey [27]
Functions are graphs that do not have repeating x-values. The domain of a function are the x-values and the range are the y-values in a function
3 0
3 years ago
Read 2 more answers
Other questions:
  • Hey can you please help me posted picture of question
    14·2 answers
  • Randy wants to join a gym to lose his winter weight. Gym A has a membership fee of $39 and charges $30 per month. Gym B has a me
    15·1 answer
  • Karen is selling ice cream sundaes to raise money for her school orchestra. She wants to purchase the least expensive ice cream,
    8·1 answer
  • True or false:<br> If ab&gt;0 then a&gt;0 and b&gt;0.
    15·1 answer
  • Evaluate f(x) = 3x + 2 when x = 5
    6·1 answer
  • John borrowed a certain amount of money from Tebogo at a simple interest rate of 8,7% per year. 
    11·1 answer
  • −46x−23=46x+23 how many solutions
    10·1 answer
  • A recipe for sparkling water juice calls for 1 1/2 quarts of sparkling water and 3/4 quart of grape juice
    6·1 answer
  • Write (-6,3) (4,-3) in slope intercept form
    15·1 answer
  • Diane receives $20,000 from her Uncle Al when he dies. She deposits it into an account with
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!