Question

Write equations for the following number pattern.

x y
1 7
2 17
3 27
4 37
5 47

Answer 1

It's an arithmetic sequence. \[
a_1 = 7, \quad d=10\\
a_n = a_1+(n-1)d=7+(n-1)10
\]

Answer 2

What? That's not what I'm looking for

Answer 3

It looks to me as if you could multiply the x value by 10, subtract 3 and you would get the y value.