Answer:

Step-by-step explanation:
Slope is negative reciprocal when two lines are perpendicular
m1=1/2 therefore m2=-2
The equation of the line in point-slope form is given as

Here m=-2 and (x1, y1)=(-3, -1)
Therefore,

Answer:
Step-by-step explanation:
40*25= 1000
1000-50-264=686
Using a calculator, the slope of the line of best-fit is of 7.2.
<h3>How to find the equation of linear regression using a calculator?</h3>
To find the equation, we need to insert the points (x,y) in the calculator.
In this problem, the points are given as follows:
(-4,-32), (-2,-8), (0,10), (2,8), (4,32).
Using the calculator, the equation is:
y = 7.2x + 2.
Hence the slope is of 7.2.
More can be learned about a line of best-fit at brainly.com/question/22992800
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#7. C #10. C #11. A #12. C
Answer:
8 piece shaded for the first one one
2 piece shaded for the second one
Step-by-step explanation:
You said 9/8 so 8 pieces shaded out of 9
You said 2/4 so 2 piece shaded out of 4