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3 years ago

I WILL GIVE YOU BRAINLIEST IF YOU ANSWER THE WHOLE QUESTION.

Mathematics

1 answer:

kicyunya [14]3 years ago

5 0

Answer:

B) $y=2x$ and C) $y=-7x+9$

Step-by-step explanation:

Once a linear function has a constant rate of change, you just have to find the linear functions. Also, the other ones are quadratic functions, and their graph are parabolas, which don't have a constant rate of change.

Considering $f(x)=y$

$f(x) = 2x$ has a constant positive rate of slope 2.

$\frac{dy}{dx}=2$

$f(x)=-7x+9$ has a constant negative rate of slope -7

$\frac{dy}{dx}=-7$

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Can someone please help me with both these questions? You will get 20pts

Volgvan

Answer:

#1) -3 feet

#2) 5hours

Step-by-step explanation:

#1) you need to find the rate of change- feet per minute

To find the rate, divide -12 feet by 4 minutes (the twelve in negative because it decreases, almost like subtraction)

-12/4= -3 feet per minute.

Now, multiply by amount of minutes- -3x1= -3 feet in 1 minute

#2) To find the maount of degrees each hour,

divide 10 degrees by 2 degrees per hour.

10/2=5 hours

Hope this helps :)- please give me brainliest!!

3 0

3 years ago

Neveah has created the function f(x) =the quantity of 2x plus 4, divided by 3 to represent the growth of her hair, where x repre

dangina [55]

Given that:

The function to represent the growth of Neveah hair is

$f(x)=\dfrac{2x+4}{3}$

where, x represents the number of months since her last hair cut.

To find:

The inverse of function and time when her hair will have grown 6 inches.

Solution:

We have,

$f(x)=\dfrac{2x+4}{3}$

Put f(x)=y.

$y=\dfrac{2x+4}{3}$

Interchange x and y.

$x=\dfrac{2y+4}{3}$

Isolate y.

$3x=2y+4$

$3x-4=2y$

$\dfrac{3x-4}{2}=y$

Put $y=f^{-1}(x)$ .

$f^{-1}(x)=\dfrac{3x-4}{2}$

So, the required inverse function is $f^{-1}(x)=\dfrac{3x-4}{2}$ . It represents the number of months to grow her hair x inches.

She can predict when her hair will have grown 6 inches by putting x=6 in the inverse function.

Put x=6 in the inverse function.

$f^{-1}(6)=\dfrac{3(6)-4}{2}$

$f^{-1}(6)=\dfrac{18-4}{2}$

$f^{-1}(6)=\dfrac{14}{2}$

$f^{-1}(6)=7$

Therefore, growth of her hair is 6 inches in 7 months.

3 0

4 years ago

BRAINLIEST TO WHOEVER ANSWERS ‼️

77julia77 [94]

Answer:

I think it is option B. and option C.

Step-by-step explanation:

an instance of a form of reasoning in which a conclusion is drawn from two given or assumed propositions. a common or middle term is present in the two premises but not in the conclusion, which may be invalid.

4 0

3 years ago

What is the range of the function f(x) = - 3x2 + 3?

AnnZ [28]

Answer:

Step-by-step explanation:

PEMDAS

3x2=6

6+3=9

-9

3 0

3 years ago