The school's guidance department compares the grade-point averages and standardized state test scores for 10 students in
each grade. the table below shows the correlation coefficient for each data set.
correlation
coefficient
grade
level
9th grade
10th grade
11th grade
12th grade
-0.1
0.2
for which data set(s) is a linear regression model reasonable?
9th grade and 11th grade data sets
10th grade data set
10th grade and 12th grade data sets
12th grade data set

answer: add the !

step-by-step explanation: then we will answer

in simplified version   it would be x ≤-4

step-by-step explanation:

multiply each term in x ≤-4 by -1

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,