Hello can you me posted picture of question

Since the order of the selection does not matter, this is a problem of combinations. 

4 students are to be selected from 18. This means we have to find the combination of 18 objects taken 4 at a time. We have to find 18C4.

18C4 = 3060

So, there are 3060 ways to select the students.

So option A gives the correct answer

Ifound this on google “that means that the graph of a function with direct variation has these features: it is a straight line: because the slope is the ratio y/x = k. it passes through the origin (0,0): because y = kx = k (0) = 0.” i hope this you for what your looking for