I'll pick uo two points from the table.
P1 = (5, 11)
P2 = (7, 13)
1.- Find the slope
slope = (y2 - y1) / (x2 - x1)
Substitution
slope = (13 - 11) / (7 - 5)
Simplification
slope = 2/2
Result
slope = 1
2.- Find the equation of the line
y - y1 = m(x - x1)
Substitution
y - 11 = 1(x - 5)
Simplification
y = x - 5 + 11
Result
y = x + 6
This is the answer to your question