I have a graph that shows on the Y - axis

Question

Just the word speed (no numbers given)
And on the x - axis is time (no number given)

The graph itself shows a decline in speed
But then the line goes up sharply

I am suppose to write a scenario for the graph

PlEASE HELP

Answer 1

Would it be y = -x

Answer 2

not much of a scenario. They want a situation in real life which would produce such a decline and then increase in typing speed.