How To Find The Rule And Equation From A Table?

X= 1, 2, 3, 4
y= 6, 7, 8, 9

X= 2, 4, 6
y= 8, 6, 8

X= 1   2    3    4Y= 3   5    7    9By how many numbers does 'Y' skip?answer= 2'Y' skips every 2 numbersso Y= 2xNow choose the 1st number of 'X'Which is 1so The answer is Y= 2x+1

You look at the number(s) given and decide how you get from a to b ex:
A____b__
1    l   __
2    l  13
8    l  7
18  l  __
______
The rule is 15-a=b
find out what you do to get b that's all!