### Home > CALC > Chapter 1 > Lesson 1.4.2 > Problem 1-155

1-155.

Clue 1: The slope from the first point to the last point should be 0.5, since that was the average velocity.

Clue 2: The graph's slope should change its positivity/negativity twice, because Theo turned around twice.

Clue 3: The first point should be (0,3) because he started 3 feet away from the motion detector.

Clue 4: Your graph should consist of straight line segments, so that you can measure their length using the Pythagorean Theorem to make sure they total 9 feet.