Difference between qualitative and quantitative velocity vs. time graphs

[Lloydsgurl]

We've been working on acceleration and velocity in my physics class and I've got a question about velocity vs. time graphs. My assignment asks me to:
A. construct a qualitative graph for v vs. t
B. construct a quantitatively accurate v vs. t graph
I'm pretty sure I know how to solve A because it's what we've been doing in class, but how would I solve B/what would it look like?

I don't think my question requires me to actually write the problem, but if I need to I can. Any help for this (ridiculously) simple question?

 

[lightgrav]

"Quantatively accurate" means that the velocity axis,
and the time axis, both need to have numerical values on them.

If you are starting with a known (quantitative) x vs t graph,
you'll have to calculate the velocity for each segment of motion
by computing the slope (rise/run).

If you're starting with a known (quantitative) a vs t graph,
you'll have to compute the area under the curve up till each time
(typically by counting "boxes" on the graph paper).

 

[Lloydsgurl]

Thank you so much!