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3 years ago

12

I need help remembering how to solve for the equation of best fit

1 answer:

Fynjy0 [20]3 years ago

8 0

<span>Here is a step by step process of how to do the paper and pencil solution:1.  Prepare a scatter plot of the data on graph paper.2.  Using a strand of spaghetti, position the spaghetti so that the plotted points are as close to the strand as possible.

3. Find two points that you think will be on the "best-fit" line.

<span>4.  </span>We are choosing the points (9, 260) and (30, 530).
You may choose different points. 5. Calculate the slope of the line through your two points (rounded to three decimal places).6. Write the equation of the line. 7. This equation can now be used to predict information that was not plotted in the scatter plot.
<span><span>Question: </span>Predict the total calories based upon 22 grams of fat.</span><span>ANS: </span><span>427.141 calories</span></span>

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What is the distance between the points (-1 , -13) and (-1 , 21) in the coordinate plane?

chubhunter [2.5K]

Answer:

$\displaystyle d = 34$

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Algebra I</u>

Coordinates

<u>Algebra II</u>

Distance Formula: $\displaystyle d = \sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$

Step-by-step explanation:

<u>Step 1: Define</u>

Point (-1, -13)

Point (-1, 21)

<u>Step 2: Find distance </u><em><u>d</u></em>

Substitute in points [DF]: $\displaystyle d = \sqrt{(-1+1)^2+(21+13)^2}$
(Parenthesis) Add: $\displaystyle d = \sqrt{(0)^2+(34)^2}$
[√Radical] Simplify: $\displaystyle d = \sqrt{(34)^2}$
[√Radical] Evaluate: $\displaystyle d = 34$

6 0

3 years ago

3w squared-8w+4=0<br><br>(solving quadartc equations by factoring)

deff fn [24]

$3w^2-8w+4=0\\\\3w^2-6w-2w+4=0\\\\3w(w-2)-2(w-2)=0\\\\(w-2)(3w-2)=0\\\\w-2=0\ \ \ or\ \ \ 3w-2=0\\\\w=2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ w= \frac{2}{3}$

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Read 2 more answers

Find the greatest common factor of 28x^2 16x

Aleks04 [339]

4x (7x +4). The greatest factor is 4x because it comes out of both.

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A figure is made up of with seven X rodes and five Y rodes . If X= 3 and Y= 5 calculate the perimeter with the formula.

sergey [27]

46? Since we got 7*3+5*5 and that is 21+25=46.

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3 years ago

True or false, if false what would the correct term be

umka21 [38]

Answer:

False You can find the side and angle but need at least two side and an angle or two angle and a side.

Step-by-step explanation:

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