A slanted line on a motion graph indicates what?

Answer 1

-- If you only know that the line is slanting rather than horizontal,

but you don't know which way it slants, then you can only say that

the speed (magnitude of velocity) is changing as time goes on.

-- If the line slants down as it proceeds from left to right, then

the speed is decreasing as time goes on.

-- If the line slants up as it proceeds from left to right, then

the speed is increasing as time goes on.

Answer 2

The slope (gradient) of a speed v time graph is acceleration.

If the graph is a straight line, then the acceleration is constant. if the slope is 0 (ie the line is horizontal) then the acceleration is 0, and the object is moving with a constant speed (which can be 0, ie the object is stationary).

If the graph is "slanted" then depending upon which way the line is "slanted" the object is accelerating or decelerating (the steepness of the slope gives the rate of this).

So the object is moving with constant acceleration and either speeding up or slowing down - which, and by how much, depends upon the gradient of the graph.

Answer 3

The objects is either speeding up / if it slants up
or if it slants down it is slowing down \

Answer 4

It means that whatever you are graphing - velocity in this case - is increasing over time.