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
VARVARA [1.3K]
3 years ago
14

Please help me with this one, I’m really stuck on it.

Mathematics
1 answer:
ANTONII [103]3 years ago
6 0
I don’t know if this will help but here you go

You might be interested in
determine the quadratic function of f whose graph is given. The vertex is (1,-3) and the y-intercept is -2
LuckyWell [14K]
Hmmm the y-intercept is at -2?  what does that mean?  well, is where the graph "intercepts" or touches the y-axis, and when that happens, x = 0, so the point is really ( 0 , -2 ).

and we know where the vertex is at.  Let's assume a vertical parabola, in which case the squared variable is the "x".

\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}})\\\\
-------------------------------\\\\
vertex
\begin{cases}
h=1\\
k=-3
\end{cases}\implies y=a(x-1)^2-3
\\\\\\
\textit{now, we also know that }
\begin{cases}
x=0\\
y=-2
\end{cases}\implies -2=a(0-1)^2-3
\\\\\\
1=a(-1)^2\implies \boxed{1=a}\qquad thus\implies 
\begin{cases}
y=1(x-1)^2-3\\
\textit{or just}\\
y=(x-1)^2-3
\end{cases}
6 0
3 years ago
Please Help will Give brainlist.
poizon [28]
Constant of proportionality is 4

equation: x/y = 4

explanation:
let's take 20 and 5 for example, if you divide 20 by 5, you will 4 of course. that's the proportionality for the first one. if you continue to divide x value by y value you will get 4. for the last two you would divide 28 by 4 and multiply 8 by 4.
5 0
3 years ago
Read 2 more answers
I've been looking at answers for 3a+1=-3.6a(a-1) and everyone is calling a minus 1 atimes 1. why?
ExtremeBDS [4]
It has no real solutions. that's why
3 0
2 years ago
A piece of copper with a volume of 8.25 cm³ has a mass of 73.92 g. A piece of iron with a volume of 5 cm³ and has a mass of 39.3
skad [1K]
Density<span> = Mass ÷ Volume

</span>
4 0
3 years ago
How do you factor this polynomial?
iragen [17]
The answer is (3x + 5) ^2
5 0
2 years ago
Other questions:
  • What is the value of a in the equation 3 a plus b equals 54 when b equals 9?
    9·2 answers
  • Jackson borrows $400 with an interest rate of 1.5%.How much interest will he pay after 4 years?
    11·1 answer
  • Vlad spent 20 minutes on his history homework and then completely solved x math problems that each took 2 minutes to complete
    5·1 answer
  • Sushil was thinking of a number. Sushil adds 72 to the number, then doubles the result to get
    15·1 answer
  • If Mark uses 3 3/4 tablespoons of coffee to make 10 cups of coffee, how much would he need to make one cup of coffee?
    14·2 answers
  • Please Help !<br> Answer the questions about Figure A and Figure B below.
    10·1 answer
  • Which relation is a function?
    13·1 answer
  • Graph these equations: y=x+5 y=x–3 Click to select points on the graph.
    9·1 answer
  • What is the volume of this prism?
    11·1 answer
  • The table shows how much Noah earns each day. About how much money did Noah earn altogether? Use the table and rounding to choos
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!