4/5; 16/20; 24/30.
10/4; 20/8; 15/6
Regression line is given in the form of: y = a + bx
Where b is the gradient
Working out 'b'


Σxy - [ΣxΣy]/N

Σx² - [Σx]²/N



Working out 'a'
a = [∑y/N] - b[∑x/N]
a = [2650/460] - 0.264[3920/460]
a = 5.86 - 2.25
a = 3.61
Regression line equation is
y = 3.61 + 0.264x
4 also 2 :))))))))))))))))
9514 1404 393
Answer:
(B) 1/27
Step-by-step explanation:
The terms of the sequence have a common ratio.
(1/8)/(3/16) = (2/16)/(3/16) = 2/3
(1/12)/(1/8) = (2/24)/(3/24) = 2/3
(1/18)/(1/12) = 12/18 = 2/3
The next term will be ...
(1/18)(2/3) = 2/54 = 1/27 . . . . matches choice B