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Rama09 [41]
1 year ago
9

Don't understand letter K can u write the equation of the described function in standard form

Mathematics
1 answer:
hram777 [196]1 year ago
4 0

The general or standard form of a parabola is

(y-k) = a(x+h)^2

h,k are the intersection points of parabola

Intersection points are where y= 0, or x=0

itsnorigin at (,0,0)that means h=0, k=0

it passes through points (-1,2) and (1,2)

So then

y= ax^2 , 2 = a (-1)^2

this means a= 2

Then results standard form equation

Y = 2• X^2

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4. The population of Bay Village is 35,000 today. Every year the
frosja888 [35]

Answer:

Linear Model:   y(x)=35,000+750x

Step-by-step explanation:

In principle <em>Linear Models </em>are employed when we want to define a relationship between an independent and a dependent variable. <em>Linear Models</em> are also known as<em> Functions </em>, where one variable is expressed as a function of <em>at least one</em> other variable. The most common example would be a dependent variable y that is directly linked as a response to any changes of an independent variable x. The most common expression of such relationship would be y=ax where a is the relationship factor between y and x and is also known as the <em>slope </em>of the function (representing a rate of change of that function).

In this question we are told that the population of Bay Village today is 35,000. So we know this is our constant variable, lets call it  b.

Next we know that every year the population is increased by 750 people. So we know that our variable and thus our independent variable is every year which we shall call x and our fixed factor is the 750 increment which we will call a.  

From that we can conclude that:

<em>Year 1 Population: 35,000</em>

<em>Year 2 Population: 35,000 + 750 = 35,750</em>

<em>Year 3 Population: 35,750 + 750 = 36,500 </em>

And so on and so forth.<em> </em>

So we want to express the above as a Linear Model of the form:

<em> y = ax + b   </em>Eqn(1).

Thus from Eqn (1) and all information given (i.e. pluging in values) we finally obtain:

y(x)=35,000+750x

Which for every different value of  x (i.e. every year) we can obtain the new and increased population  y(x).

7 0
3 years ago
Question : Which Point satisfies the system of equations y= 3x - 2 and y = -2x + 3
svetoff [14.1K]

Answer:

D

Step-by-step explanation:

y = 3x - 2 intercepts the y axis at -2

y = -2x + 3 intercepts the y axis at 3

the lines which satisfy these conditions intersect at point D

4 0
3 years ago
Which expression is equivalent to 4/9 x 2
Slav-nsk [51]

Answer:

4 × 2/9

Im sorry if I'm wrong

5 0
3 years ago
Read 2 more answers
Person A is 49 times older than person B. the sum of their ages 1.450​
Pepsi [2]

Answer:

Step-by-step explanation:

Is 1.450 correct?  145 would make more sense.  I'd even go with 1,450, just for a laugh.  I'll assume 1.450 is the correct number here.  I'll assume assute the question eventually asks how old are A and B.

A = 49(B)

A+B=1.450

Substitute:  

49B+B=1.450

50B = 1.450

B = 0.029

A = 49(B)

A = 49*(0.029)

A = 1.421

3 0
2 years ago
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victus00 [196]

negative number taken to an odd power gives a negative result (because, after cancelling, there will be one minus sign left over).

3 0
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