The speed is represented by

Question 17 options:

the ratio of the change of position to the time interval during the change.

the absolute value of the slope of a position-time graph.

the instantaneous velocity.

the time interval.

The absolute value of the slope of a position-time graph.

Explanation:

The slope in a time position graph is the derivative of the position with respect to time.

This derivative of the position with respect to time is what is known as velocity, which is a vector quantity.

Speed is the absolute value of velocity, since it is a scalar quantity, it has no sign and no direction.

So the correct answer is that speed is the absolute value of the slope in a graph of position and time.