Need some help! With any of the questions

The parabola x= √y-9 opens: a.)up b.)down c.)right d.)left

During a bike challenge riders have to collect various colored ribbons each 1/2 mile they collect a red ribbon each eighth mile they collect a green ribbon and each quarter mile they collect a blue ribbion wich colors of ribion will be collected at the 3/4 markrer

The function models the number of accidents