Answer
(a) The vertical axis intercept is 3.0 km
The slope is $1.56~km/h$
(b) The vertical axis intercept means that the starting position is 3.0 km from the origin.
The slope of $1.56~km/h$ means that the object moves in the positive x-direction at a speed of $1.56~km/h$
Work Step by Step
(a) On the graph, we can see that when t = 0, the vertical axis intercept is 3.0 km.
We can use the points (0, 3.0) and (9.0, 17.0) to find the slope:
$m = \frac{17.0~km-3.0~km}{9.0~h - 0~h} = 1.56~km/h$
The slope is $1.56~km/h$
(b) The vertical axis intercept means that the starting position is 3.0 km from the origin.
The slope of $1.56~km/h$ means that the object moves in the positive x-direction at a speed of $1.56~km/h$
