You really should be able to look at this for a while
and understand what's going on.
First point: 2 is 1/2 of 4 .
Second point: 3 is 1/2 of 6 .
Third point: 4 is 1/2 of 8 .
Fourth point: 5 is 1/2 of 10 .
Any point: The second number (T) is 1/2 of the first number (R) .
The equation: T = 1/2 R
