At Generic High School, in the year 2001, there were 20 students per every computer. In 2008, there were 4 students per computer. Write two ordered pairs to represent the ratio of student to computer. (Let x equal the number of years since 2000.)

Answer 1

ordered pairs of the form (#of students, #computers)
(20,1) , (4,1) <----- two ordered pairs to represent the ratio of student to computer as asked for

You might want to re-word your question so that "time" enters the picture