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Home > CALC > Chapter 6 > Lesson 6.4.1 > Problem 6-130


Trace the distance-time graph and the tangent at second on your paper. Distance is measured in feet.

  1. Estimate the velocity at sec.

    Estimate the slope of the tangent.

  2. Find another time on the graph where the object has the same velocity. Show on your graph how you know the velocities are equal.

    Sketch various tangent lines to the graph of . Keep sketching until you find one with the same slope as the tangent at .

    Parallel lines have the same slope.