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)2^x/2

Tonya gave the function y − 6 = 3(x − 1)

Which students are correct?