So you basically plug in the x value beside the 5 so if your on number 3 the answer would be 5(3) which is 15
The value of the digit is In the Thousands place
(1, -4).
A way I've always done it is to just take the rule and simply add the numbers.
The current coordinates of L are (-1, 2).
-1 + 2 is 1, and 2 - 6 is -4. Easy peasy. :)