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Keith_Richards [23]
3 years ago
6

Using the graphing tool, determine the function for the graph that passes through the points (2.1,2.4), (4.3,6.8), and (6.1,1.9)

.
f(x) =
x2 +
x −

Mathematics
2 answers:
Paha777 [63]3 years ago
8 0

Answer:

  f(x) = -1.18056x² +9.55556x -12.4604

Step-by-step explanation:

As required by the problem statement, technology was used to find the polynomial function that passes through the given points. The coefficients shown above are rounded to 6 significant figures. The exact coefficients appear to be ...

  f(x) = (-1 13/72)x² +(9 5/9)x -(12 221/480)

LenKa [72]3 years ago
6 0

Answer:

The required equation is f(x)=-1.1806x^2+9.5556x-12.46

Step-by-step explanation:

Given : The function for the graph that passes through the points (2.1,2.4), (4.3,6.8), and (6.1,1.9).

To find : Determine the function?

Solution :

First we plot the points with the help of graphing tool.

When we add trend-line in the points it will given you the equation of best fit of the points.

Using Regression calculator,

The equation is given as y=-1.1806x^2+9.5556x-12.46

and correlation coefficient is R^2=1 showing the best fit line.

Refer the attached figure below.

The required equation is f(x)=-1.1806x^2+9.5556x-12.46

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(x^2-1)(4x^3-3x^2+5)
emmainna [20.7K]

Anwser: 4x^5-3x^4-4x^3+8x^2-5

Step-by-step explanation:

yes

6 0
1 year ago
How can you determine which of two lines will be steeper from
Romashka-Z-Leto [24]
Well on a table of data, if the y coordinates increase a lot over a short x distance then it will be steep.

In an equation, you would put it into y = mx + b form and whatever your m is will be your slope. If m is large, it will be steep.
8 0
3 years ago
If your teacher tells you to do questions 28 through 41 in your math book for homework, how many questions is that?
ANTONII [103]
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5 0
3 years ago
Read 2 more answers
Jane has a pre-paid cell phone with Splint. She can't remember the exact costs, but her plan has a monthly fee and a charge for
yan [13]

Answer:

The costs of the plan are $0.15 per minute and a monthly fee of $39

Step-by-step explanation:

Let

x ----> the number of minutes used

y ----> is the total cost

step 1

Find the slope of the linear equation

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

we have the ordered pairs

(100,54) and (660, 138)

substitute

m=\frac{138-54}{660-100}

m=\frac{84}{560}=\$0.15\ per\ minute

step 2

Find the equation of the line in point slope form

y-y1=m(x-x1)

we have

m=0.15\\point\ (100,54)

substitute

y-54=0.15(x-100)

step 3

Convert to slope intercept form

Isolate the variable y

y-54=0.15x-15\\y=0.15x-15+54\\y=0.15x+39

therefore

The costs of the plan are $0.15 per minute and a monthly fee of $39

6 0
3 years ago
Chuanxi planned a rectangular sidewalk with a length of 21 ft. He made a scale drawing using a scale factor of 1 in. = 7 ft. He
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Original Ratio of 1 in = 7 ft so 3 in = 21 ft
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1/x = 3/27

cross multiply a/b = c/d ad = bc
1/x = 3/27
3x = 27
x = 9

1 in represents 9 ft
7 0
3 years ago
Read 2 more answers
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