Select the correct answer from each drop-down menu. Ted writes an equation to represent the number of stairs he climbs, s, in terms of the time in seconds, t, it takes him to climb those stairs.

Michael, on the other hand, creates a table to record the time in seconds it took him to walk up a different numbers of stairs.

Time
(seconds)

Number
of Stairs

10
9
20
18
40
36
Assume that Ted and Michael both climb the same set of stairs and that they climb at a constant rate. Ted’s approximate climbing rate is
stairs per second, and Michael’s rate is
stairs per second.

On a graph of these relationships, the line relating the number of stairs that Michael climbed with respect to time would be
Ted’s line. So, Ted’s climbing speed is
Michael’s.