How Do Different t Values Affect a Bezier Curve?

[Boogieface]

Homework Statement

I am working on an investigation about bezier curve. Given 4 points (starting point, ending point and two different control points). 0.2 was my given t value. One of the tasks was using different value of a parameter t such as 0.3, 0.5, 0.75 and 0.9. I was asked to explain the anomalies and the significance of those value of t. But I don't quite know how to explain and what I really should be looking for, can anyone please give me some suggestions?

Homework Equations

The Attempt at a Solution

After finding different points of P, I connected them and formed a curve. I reckon the curve is the resultant curve.

 

[Unit]

Hi! If you haven't looked yet, this Wikipedia article section is a lot of help.

As for your questions, could you perhaps provide a little more information?