Answer: the slope is 2/3.
Step-by-step explanation: The expression for finding slope when given 2 coordinates of the line is (y2 - y1) ÷ (x2 - x1) which just means that you take the y output of the second coordinate given to you and subtract the y output of the first coordinate given from that and the same for the x inputs. So when you plug in the numbers into that expression, you get (0- (-4)) ÷ (9 - 3). When you subract something from a negative number, its the same as adding. So it could also be written as (0 + 4) ÷ (9 - 3). When you subtract and add the numbers in both parentheses you end up with the fraction 4/6, but now you need to simplify that fraction which leaves you with the final answer of the fraction 2/3!
I hope this helps :)
Answer:
Correct option: (B)
Step-by-step explanation:
A one-sample <em>t</em>-test can be performed to determine whether the mean weight of female college students is still 59.4 kg.
The hypothesis can be defined as:
<em>H₀</em>: The mean weight of female college students has changed.
<em>Hₐ</em>: The mean weight of female college students has not changed.
The information provided is:

As the there is no information about the population standard deviation we will use a <em>t</em>-test for the mean.
The test statistic is:

Decision rule:
If the if the <em>p</em>-value of the test is less than the significance level of the test <em>α</em> then the null hypothesis will be rejected and vice versa.
The degrees of freedom of the test is:

The test is two-tailed.
Compute the <em>p</em>-value of the test as follows:

*Use a <em>t</em>-table for the probability.
The <em>p</em>-value = 0.13 > <em>α</em> = 0.10
The null hypothesis was failed to be rejected.
As the null hypothesis was rejected it can be concluded that there is not sufficient evidence that the mean weight of female students has changed.
Answer:
(-2,-2) and (3,4)
Step-by-step explanation:
Edge 2020
Answer:
y = 17
Step-by-step explanation:
We have five values : 2 , 5 , 7 , y , 9
and the mean = 8
this means :

Verification: (2+5+7+17+9)÷5 = 8