The question was, Explain instantaneous velocity. My answer: Limit as delta(t) approaches zero of average velocity is inst. velocity. Or as delta(t) approaches zero, average velocity approaches inst. velocity. inst. velocity is the slope of the tangent line at a given point..... Then I wrote: V = Lim Delta(Average Velocity)/Delta(t) Delta(t) --> 0 Is my answer totally wrong because I got 5/10 pts on the answer?