Louis, Michelle, and Tonya were asked to find an equation for a function that passed through the points (1, 6) and (3, 12).

Louis gave the function y = 6(2)(x-1)/2
Michelle gave the function y = (3
2
)2x/2
Tonya gave the function y - 6 = 3(x - 1)

Which student(s), if any, are correct? (Please list names)