Answer:

Step-by-step explanation:
The point-slope form of an equation of a line:

m - slope


Answer:

Step-by-step explanation:
It is given that:

<u>Formula to be used:</u>

Using Formula (1) written above:

Now, using Formula (2) written above:

So, we can say that:

We have to find the value of
.
Using Formula (3) written above:

So, ultimately we need to find the value of 
Using equation (1):

So, the answer is
.
Answer:
Second Data Set
Step-by-step explanation:
The mean absolute deviation describes the average distance between each data point. Let's consider both data sets. In data set one, classmate ages are recorded. Because most of Jordan's classmates are close together in age, the amount of deviation is small. In data set two, teach ages are recorded. Because teacher's ages can range from 23-99, the deviation in this set is expected to be larger than set one.
Answer:
C
Step-by-step explanation:
You will probably find that line C has the best correlation with the data plotted.
In general, the "line of best fit" will minimize the sum of squares of vertical distances between data points and the line. The line with the smallest vertical differences is the line in graph C.
_____
The line in graph D goes through several data points, so the vertical distance from the point to the line is zero for those. However, the remaining points are farther from the line than they are in graph C. The measure of fit is the square of the distance, so the penalty for larger distances is fairly severe.