Write the equation of a linear function f, such that f(1)=4 and f(4)=1 Then find f(-2)

Answers

Answer 1

If f(x) is a linear function, then

f(x) = ax + b

for some constants a and b.

Given that f (1) = 4 and f (4) = 1, these constants are such that

f (1) = a + b = 4

f (4) = 4a + b = 1

Solve for a and b : eliminate b by subtracting the two equations,

(a + b) - (4a + b) = 4 - 1

-3a = 3

a = -1

Then

-1 + b = 4

b = 5

So we have

f(x) = -x + 5


Related Questions

Solve for x , 4-3x /2=5

Answers

Answer:

x= -1/3

Step-by-step explanation:

You take out 2 by multiplying 2/1 in both sides

then u have 4-3x=5

You subtract 4 from 5 and you have

-3x=1

divide and the answer is x= -1/3

Given fractional expression:

{(4-3x)/2} = 5

→ 4-3x = (5)2

→ 4-3x = 10

→ -3x = 10-4

→ -3x = 6

Therefore, x = -(6/3) = -2

1/5(2x+92)=5x find x

Answers

Answer:

x = 4

Step-by-step explanation:

[tex]\dfrac{1}{5}*(2x + 92) = 5x[/tex]

Multiply the equation by 5

[tex]5* \dfrac{1}{5}*(2x +92) =5x*5\\\\ 2x + 92 = 25x[/tex]

Subtract 2x from both sides

92 = 25x - 2x

92 = 23x

Divide both sides by 23

92/23 = 23x/23

4 = x

x = 4

30 points! Please help

Answers

F, because the circles are open

Answer:

Step-by-step explanation:

Domain means what is the lowest value of x on the graph and what is the highest. Our graph begins at an x value of -5 (but -5 is not included because the dot is not filled in) and goes all the way up to 2 (but 2 is not included either since the dot is not filled in. Therefore, the domain is

D = {x | x ∈ R, -5 < x < 2}

which means that the domain is in the set of real numbers that begin at -5 and end at 2, neither included.

Choice F is the one you want.

Find the distance between the points.
(3,3) and (3,-5)

Answers

Answer:

0, 8

Step-by-step explanation:

To find out a distance of these numbers, you shall find out how far each number is, preferably you can use a number line for this.

what is the simplified form of (3x^3 - 4x^2 + 6x) + (-3x + 2x^2 + 5x^3) written in standard form?

Answers

Answer:

8x³ - 2x² + 3x

Step-by-step explanation:

Given

(3x³ - 4x² + 6x + (- 3x + 2x² + 5x³) ← remove parenthesis

= 3x³ - 4x² + 6x - 3x + 2x² + 5x³ ← collect like terms

= 8x³ - 2x² + 3x

How do i use a graphing calculator?

Answers

Answer:

Hi, There!

Press the "Y=" button to enter the function screen.

Enter the function (e.g.,

Y

=

X

2

4) into one of the lines. 3. Press "GRAPH." The calculator will draw the function for you.      

To find the Y-intercept of a graph that has been drawn:

Press "2nd," then "TRACE" to go to the "CALCULATE" window.

Highlight "value" and press "ENTER."

At the bottom of the screen that appears, enter "0" after "X=." The result will be the

Y

-intercept and associated

X

-coordinate.

xXxAnimexXx

Have a great day!

what is a computer ​

Answers

Answer:

computer is an electronic machine which process raw data and gives meaningful information to the user.

Answer:

A computer is an electronic machine which accepts raw data process them and give meaningful information to the user

have a great day ☺

g(x)=x^2-4x
find g(5)
help!

Answers

Answer:

g(5) = 5

Step-by-step explanation:

g(x) = x^2 - 4x when x = 5

~Substitute

= 5^2 - 4(5)

~Simplify

= 25 - 20

= 5

Best of Luck!

I know the answer, I'm just confused on what to put for explore, plan, solve, and examine!

Joseph earned $53 the first week he worked at Jim’s Candy Store and $62 the next week. How much did Joseph earn his first two weeks?
Explore:
Plan:
Solve:
Examine:​

Answers

Answer:

Explore - ??? (What are you suppose to put for that (Add comment))

Plan - First week - 53 Second week - 62

Solve - 53 + 62 = 115

Examine - (Use a graph to see the rise?)

Step-by-step explanation:

PLS HELP VERY EASY ILL GIVE U BRAINLIEST

Answers

[tex](\dfrac{1}{3})^4=\dfrac{1^4}{3^4}=\dfrac{1\cdot1\cdot1\cdot1}{3\cdot3\cdot3\cdot3}=\boxed{\frac{1}{81}}[/tex]

Pls help need in 10 mins not sure how to solve w fraction

Answers

Answer:

g(x)=1/3x +7

Step-by-step explanation:

replace where there is g(x) with any number in the grid of box below g(x) ... and replace where there is x in the equation with the same alternate number you picked. so if you picked 8 as g(x) then pick 3 as your x.

substitute these numbers in each equation and after solving if the left side is equal to the right side then that's the equation needed.

g(x) = 1/3x + 7

8= 1/3(3) +7

8=1+7

8=8.

hence, option A is correct.

How would I simplify this expression

Answers

Answer:

-8n - 32

Step-by-step explanation:

Distribute the -4 to the other terms.

-4 · 2n = -8n

-4 · 8 = -32

Answer: -8n-32

Step-by-step explanation:

Expand the equation, multiply all the terms by -4: -4(2n)+(-4)(8)

Evaluate: -8n+(-32)

Simplify the +(-32) into -32: -8n-32

what is (-5)(-5)(-5)(-5) as an exponents


please I need this now ​

Answers

Answer:

[tex]5^{-4}[/tex]

Step-by-step explanation:

-5*-5*-5*-5 = 625

Chow,...!

PLEASE HELPPP ASAP!!!
Suppose that the relation S is defined as follows.
S={(-1,-4), (8, 8), (8, -6)}
Give the domain and range of S.
Write your answers using set notation.

Domain=
Range=

Answers

Answer:

Domain = {-1, 8}

Range = {-4, 8, -6}

Step-by-step explanation:

Domain is the set of first coordinates

Range is the set of second coordinates

Memory trick:  D before R.  x before y

Domain = set of x values

Range = set of y values

I need help real quick

Answers

The answer is D, -3/7

answer is option c 7/37 lies in the x axis and it is positive3 lies in the y axis and it is also positiveso the answer is option c

please mark this answer as brainlist

HELP DUE IN 10 MINUTES!!!


Solve the following equation for a. Be sure to take into account whether a letter is capitalized or not.


D = Ga + 3h3a


a =??

Answers

[tex]\\ \sf\longmapsto D=Ga+3h^3a[/tex]

Take out a common

[tex]\\ \sf\longmapsto a(G+3h^3)=D[/tex]

[tex]\\ \sf\longmapsto a(3h^3)=\dfrac{D}{G}[/tex]

[tex]\\ \sf\longmapsto a^3=\dfrac{D}{3Gh}[/tex]

[tex]\\ \sf\longmapsto a=\sqrt{\dfrac{D}{3Gh}}[/tex]

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

D = Ga + 3h³aa = ?

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

[tex] \sf \: D = Ga+3 { h }^{ 3 } a[/tex]

Swap sides so that all variable terms are on the left-hand side.

[tex] \sf \: Ga+3h^{3}a=D [/tex]

Combine all terms containing a.

[tex] \sf\left(G+3h^{3}\right)a=D [/tex]

Divide both sides by [tex]\sf\:G+3h^{3}[/tex].

[tex] \sf\frac{\left(G+3h^{3}\right)a}{G+3h^{3}}=\frac{D}{G+3h^{3}} \\ [/tex]

Dividing by [tex]\sf\:G+3h^{3} [/tex] undoes the multiplication by [tex]\sf\:G+3h^{3}[/tex].

[tex] \boxed{ \boxed{ \bf \: a=\frac{D}{G+3h^{3}} }} \\ [/tex]

( x - 2 ) ( x + 2 ) (

Answers

Step-by-step explanation:

[tex](x - 2)(x + 2) \\ x(x + 2) - 2(x + 2) \\ x { }^{2} + 2x - 2(x + 2) \\ x {}^{2} + 2 x - 2x - 4 \\ x {}^{2} - 4[/tex]

(X-2)(x+2) = x.x+2x-2x-4
= x.x - 4
=x^2 - 4

Bro y’all for real need to help like come on bro

Answers

40
48
Hope this helps *smiles*
Sorry if it’s wrong

The temperature outside changed from 91°F to 49°F over a period of six days. If the temperature changed by the same amount each day, what was the daily temperature change? ​

Answers

Answer:

Step-by-step explanation:

The temperature change in 6 days is 91 - 49 = 42 F

So the daily change is 42/6 = 7 F.

plz help me nhdhdhdhdhdhdhhdhdhdhdhdhdhdhdhd

Answers

12 / 28. Or divide top and bottom by 4
3 / 7

Perform the indicated operations. Write the answer in standard form, a+bi.
-5-7i / 13+4i

Answers

Answer:

[tex]thank \: you[/tex]

helpppppppppppppp!!!!!!!

Answers

Answer:

-(6y + 2z) - 7z - (12z + 32y)

Step-by-step explanation:

Can anyone help me ASAP

Answers

Answer:

for the barn, u just multiple all the numbers together = 480

Step-by-step explanation:

Simplify the expression below.
(x^4)^-6
ОА. x^-24
Ов. х^-10
Ос. X^10
OD. X^24

Answers

Answer is : x^24
Hehehehhehegegegehgehegegegegeggegegegegvevsvd

PLSS HELP WILL MARK BRAINLIEST!! :))

Answers

Answer:

x= -2 is the line of reflection

Find x if the perimeter is 23.

Answers

[tex]\\ \sf\longmapsto 4x+3x-5+2x+1=23[/tex]

[tex]\\ \sf\longmapsto 7x+2x-5+1=23[/tex]

[tex]\\ \sf\longmapsto 9x-4=23[/tex]

[tex]\\ \sf\longmapsto 9x=23+4[/tex]

[tex]\\ \sf\longmapsto 9x=27[/tex]

[tex]\\ \sf\longmapsto x=\dfrac{27}{9}[/tex]

[tex]\\ \sf\longmapsto x=3[/tex]

Answer:

x = 3

Step-by-step explanation:

First, we know that the perimeter in total is 23. So, we need to make sure that all of the sides combined are 23. The equation becomes:

3x - 5 + 2x + 1 + 4x = 23

Let's simplify this.

3x + 2x + 4x - 5 + 1 = 23

Simplify again.

3x + 2x + 4x - 5 + 1 = 23

5x + 4x - 5 + 1 = 23

9x - 5 + 1 = 23

9x - 4 = 23

Now we have the simplified equation of 9x - 4 = 23. Now we must solve for x.

9x - 4 (+ 4) = 23 (+ 4)

9x = 27

9      9

x = 3

Now we can see that x = 3, which should be our answer. To make sure, let's plug it into the equation.

[3(3) - 5] + [2(3) + 1] + [4(3)] = 23

[9 - 5] + [2(3) + 1] + [4(3)] = 23

[9 - 5] + [6 + 1] + [4(3)] = 23

[9 - 5] + [6 + 1] + 12 = 23

4 + [6 + 1] + 12 = 23

4 + 7 + 12 = 23

11 + 12 = 23

23 = 23

As you can see, we got the answer 23 = 23. That indeed means that x = 3. Hope this helps!

is 4/7 a rational number

Answers

Answer: Yes.

Step-by-step explanation: Any number that can be converted to or written in fraction form is a rational number. And 4 and 7 are whole numbers. Also all whole numbers are rational numbers. So that basically means that 4/7 is a rational number.

Help (Geomotry)3
Helpppppp.

Answers

If you add 8x and 14x it will give you 22x

If you subtract 11-1 you have 10.

so the answer is 22x -10

[tex] \huge \boxed{\mathfrak{Question} \downarrow}[/tex]

Find the measure of JL.

[tex] \large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}[/tex]

Given, K is the midpoint of JL. So, JK = KL.

KL = 14x - 1JK = 8x + 11JL = ?

________

JL = JK + KL (given that K is the midpoint of JL)

JL = (8x + 11) + (14x - 1)

________

[tex] \large \boxed{\mathfrak{Steps} \downarrow}[/tex]

[tex] \sf( 8 x + 11 ) + ( 14 x - 1 )[/tex]

Combine 8x and 14x to get 22x.

[tex] \sf \: 22x+11-1 [/tex]

Subtract 1 from 11 to get 10.

[tex] \boxed{ \boxed{ \bf22x+10 }}[/tex]

________

Also given that, JK = KL.

So, (8x + 11) = (14x - 1)

⇨ (8x + 11) = (14x - 1)

⇨ 8x + 11 = 14x - 1

⇨ 11 + 1 = 14x - 8x

⇨ 12 = 6x

⇨ x = 12 / 6

⇨ [tex] \boxed{ \boxed{ \bf \: x= 2 }}[/tex]

________

Now, value of JL will be,

JL = 22x + 10

Substitute the value of x.

JL = 22(2) + 10

JL = 44 + 10

[tex] \boxed{ \boxed{ \bf\: JL = 50 }}[/tex]

So, the value of JL will be 50 units.

what is the value of x

Answers

Answer:

Step-by-step explanation:

A six sided figure has a total of 720 degrees for its interior angles. That comes from the formula (n - 2) * 180 where n is 6.

4 * 180 = 730.

So add up what you know plus x and make it equal to 720.

112 + 133 + 128  + 100 + 120 + x = 720      Combine the left.

593 + x = 720                                             Subtract 593 from both sides.

x = 720 - 593

x = 127

Evaluate the expression,
if x = 4, y = 9, and z = 7.
x(y + z - 32)

Answers

x = 4 and y = 9 and z = 7

x(y + z - 32) = 4 · (9 + 7 - 32) =

= 4 · (16 - 32) = 4 · (-16) = -64

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