Ann uses her phone primarily to take a lot of selfies. The storage space on her
phone is limited, so Ann needs to keep track of how many selfies she takes.
There is a proportional relationship between the number of selfies Ann takes, x,
and the amount of storage (in megabytes) she uses taking selfies, y.
Ann uses 12 megabytes of storage when she takes 6 selfies. Write the equation for the
relationship between x and y.
y = ?