You find the slope by putting the points in the formula y2-y1/x2-x1
when you plug them in it should look like this
-4 -1/8-8
then you would add or subtract, when you do you would get
-5/0
this can't be divide so the slope of this 2 points is undefined
Hope this helped
Answer:
264,000
Step-by-step explanation:
6,600
x 40
_______
264,000
Answer: (47.51, 54.49)
Step-by-step explanation:
Confidence interval for population mean is given by :-

, where n= sample size .
= population standard deviation.
= sample mean
= Two -tailed z-value for
(significance level)
As per given , we have

n= 44
Significance level for 95% confidence = 
Using z-value table ,
Two-tailed Critical z-value : 
Now, the 95% confidence interval for the true population mean textbook weight will be :-

Hence, the 95% confidence interval for the true population mean textbook weight. : (47.51, 54.49)