TRI MJ Pre-Algebra V16, Kelly Muir ( 4028/ S) -
Question 1 (Essay Worth 10 points)
(06.01 MC)
The scatter plot shows the relationship between the test scores of a group of students and the number of hours they study in a week:
Test Scores and Hours Studying
у
M
N
100
90
80
70
60
Test Scores 50
40
30
20
10 H.
0
1 2 3 4 5 6 7 8 9 10
Hours Studying
Part A: What is the group of points labeled N called? What is the point labeled M called? Give a possible reason for the presence of point M. (5 points)
Part B: Describe the association between students' test scores and the number of hours they study. (5 points)

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?