B. y = 3x - 2
Step-by-step explanation:
A linear regression line is in form of Y=A+Bx where B is the slope of the line and A is the intercept when x=0
Form a table as shown
x y xy x² y²
1 4 4 1 16
2 1 2 4 1
3 5 15 9 25
4 10 40 16 100
5 16 80 25 256
6 19 114 36 361
7 15 105 49 225
28 70 360 140 984 ------sum
From the table;
n=7 ---number of data points
∑x = 28
∑y=70
∑xy =360
∑x² =140
∑y² = 984
Applying equations for A and B
A=(∑y)(∑x²) - (∑x)(∑xy) / n (∑x²)-(∑x)²
A=(70)(140) - (28)(360) / 7(140)-(28²)
A=9800 - 10080 / 980-784
A= -280 /196
A= -1.43
B= n(∑xy)-(∑x)(∑y) / n(∑x²)-(∑x)²
B=7(360)-(28)(70) / 7(140) - (28²)
B=2520-1960 /980-784
B=560/196
B=2.86
The equation will be;
Y=A+Bx
Y=-1.43+2.86x
Y=2.86x-1.43
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Regression line : brainly.com/question/12280902
Keywords : equations, regression line, data, table
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Answer: 1 inch = 20 feet
Step-by-step explanation: You can answer this question using Unit Rate. Khan Academy explains it better, but basically you take the ten inches and divide it by ten to get one. and to get the scale, you have to divide 200 by ten to get the unit rate where 1 inch equals 20 feet.
The answer is for this question is true
Answer:
Step-by-step explanation:
The figure is a parallelogram
we know that
In a parallelogram opposite angles are congruent and consecutive angles are supplementary
In this problem
----> by consecutive interior angles
solve for x
Answer:
3+x=10
Step-by-step explanation:
