What does the slope of the line on a v-t graph indicate?

What does the slope of a distance-time graph indicate ?

What does the slope of velocity-time graph indicate ?

In the distance-time graph above, what does the slope of the straight line indicate?

What does the slope of a speed-time graph indicate ?

Draw a graph showing the variation of stopping potential with frequency of the incident radiation. What does the slope of the line with frequency axis indicate? What information can be obtained from the values of intercept on the potential axis?

What is the slope of the straight line for the graph drawn between Ink and y, where k is the rate constant of a reaction at temperature T?