Given: The Table of Values
To Find: The least-squares regression line for the data set in the table by using the desmos graphing calculator.
SolutionThe general form of least-squares regression line is: y = mx + b Where, m is the slope and b is the y-intercept.
Where, m is the slope and b is the y-intercept.By using the desmos graphing calculator, we get
m 2.55 b -6.435 Substitute these Values
y = (2.55)x + (-6.435)
y = 2.55x - 6.435
Answer: A
Answer:
The18th term of the given sequence is -128
Explanation:
To find the 18th term of the sequence:
42, 32, 22, 12, ..., we need to find the nth term of the sequence first.
The nth term of a sequence is given be the formula:
Where a is the first term, and d is the common difference.
Here, a = 42, d = 32 - 42 = -10
To find the 18th terem, substitute n = 18 into the nth term