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Aleonysh [2.5K]
3 years ago
5

Find the equation of the least squares regression line. Show all calculations, and be sure to define any variables used.

Mathematics
1 answer:
spayn [35]3 years ago
3 0
Steps
Step 1: For each (x,y) point calculate x2 and xy.
Step 2: Sum all x, y, x2 and xy, which gives us Σx, Σy, Σx2 and Σxy (Σ means "sum up")
Step 3: Calculate Slope m:
m = N Σ(xy) − Σx Σy N Σ(x2) − (Σx)2
Step 4: Calculate Intercept b:
b = Σy − m Σx N.
Step 5: Assemble the equation of a line.
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What do the numbers represent in a linear equation in slope-intercept<br>form? ​
Contact [7]

<u>Answer:</u>

The numbers represent in a linear equation in slope-intercept form are described

<u>Solution:</u>

We have to know about what do the numbers represent in a linear equation in slope-intercept form  

We know that,  

In the equation of a straight line when the equation is written as "y = mx + b"  is called slope intercept form

The slope is the number " m " that is multiplied on the x, and  " b " is the y - intercept (that is, the point where the line crosses the vertical y-axis).

And, x, y are the coordinates set representing the points a particular line which is represented by given line equation.

Hence, numbers in slope intercept form are described

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3 years ago
In a circle with a radius of 8 ft, an arc is intercepted by a central angle of 3π4 radians.
sineoko [7]
We know that

the length of a circumference=2*pi*r
for r=8 ft
the length of a circumference=2*pi*8---------> 16π ft

if 2π radians  (full circle)-------------------> has a length of 16π ft
3π/4 radians-------------------------------> X
X=3π/4*16π/2π-------------> X=6π<span> ft

the answer is
6</span>π ft
8 0
3 years ago
Read 2 more answers
Which expression can be used to find the difference of the polynomials?(10m-6)-(7m-4)
murzikaleks [220]

Answer:

dont you already have it

7 0
3 years ago
Which of the following points would be on the graph of the equation: y=-4x+6
lawyer [7]

Answer:

Option 2: (10, -34)

Step-by-step explanation:

Given the linear equation in slope-intercept form, y = -4x + 6, where the <u>slope</u>, <em>m</em> = -4, and the <u>y-intercept</u>, <em>b</em> = 6:

An easier way of finding out which of the given options is a solution is to substitute their values into the equation to see whether they will provide a true statement.

<h3>Option 1: (-10, 34)</h3>

Substitute x = -10, and y = 34 into the equation.

y = -4x + 6

34 = -4(-10) + 6

34 = 40 + 6

34 = 46 (False statement). Hence, Option 1 is not a solution to the given equation.

<h3>Option 2: (10, -34)</h3>

Substitute x = 10, and y = -34 into the equation.

y = -4x + 6

-34 = -4(10) + 6

-34 = -40 + 6

-34 = -34  (True statement). Hence, Option 2 is a solution to the given equation.

<h3>Option 3: (5, 10)</h3>

Substitute x = 5, and y = 10 into the equation.

y = -4x + 6

10 = -4(5) + 6

10 = -20 + 6

10 = -14  (False statement). Hence, Option 3 is not a solution to the given equation.

<h3>Option 4: (-5, 10)</h3>

Substitute x = -5, and y = 10 into the equation.

y = -4x + 6

10 = -4(-5) + 6

10 = 20 + 6

10 = 26  (False statement). Hence, Option 4 is not a solution to the given equation.

Therefore, the correct answer is Option 2: (10, -34).

7 0
2 years ago
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