Trying to find the rule & equation for the function table.

Question

x= 1, 2, 3, 5, 10, 12
y= 9, 13, 17, 25, 45, 53

Answer 1

Assuming it's linear. Dy/dx -> (13-9)/(2-1)=4=k.

9=4*1+m -> m=5

y=4x+5