Which is the graph of y=3/4x-3?

Is this a polynomial function? i need to know asap

Which equation expression the relationship between the number of boxes b and the number of cans c and the proportion is 48

Aclassroom is made up of 11 boys and 14 girls. the teacher has four main classroom responsibilities that she wants to hand out to four different students (one for each of the four students). if the teacher chooses 4 of the students at random, then what is the probability that the four students chosen to complete the responsibilities will be all boys?