Which equation could have been used to create this function table? x y 2 4 6 12 10 20 12 24 14 28 a. y = 2x b. y = 4x c. y = x + 4 d. y = x + 2

Among other approaches, finding the actual equation of the line thru these points is workable:

6 12
10 20
                  20-12
slope m = = 8/4 = 2       The only answer choice that matches is A:
                   10-6                          y = 2x