Find the slope of the line through the points (−3, 1) and (−1, 5).

Hello from MrBillDoesMath!

2

Discussion:

Slope of a non-vertical line through (x1, y1), (x2, y2) is

(y2 - y1)/(x2-x1)

Substituting our values into this formula gives

( 5 - 1 )  / ( -1 - ( -3) )  =

4/ ( -1 + 3) =

4 /2 =

2

Thank you,

MrB

Slope is 2.

Step-by-step explanation:

Slope= 2

Step by Step Explanation:  

Since, given points are:  

(x1,y1) = (-3,1)

(x2,y2) = (-1,5)

Now, by using formula of slope.  

Slope= y2-y1 / x2-x1

Slope= 5-1 / -1-(-3)

Slope= 4 / 2  

Slope= 2  

Therefore required slope is 2.  

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

d. 24+-0.114

step-by-step explanation:

the question requires us to calculate the approximate 95% confidence interval for the mean number of ounces of ketchup per bottle in the sample given the following statistics;

sample mean = 24

standard deviation, σ = 0.4

sample size , n = 49

the confidence interval for a population mean is calculated using the formula;

sample mean ± z-score*(σ/sqrt(n))

the z-score associated with a 95% confidence interval, from the standard normal tables, is;

1.96

substituting these values into the formula;

24 ± 1.96*(0.4/7)

= 24 ± 0.112

from the alternatives given, choice d is closest to the above expression;