Mathematics for IGCSE & O level - Graphs In Practical Situations (Section 5 - No. 11)
What information can you get from the y-intercept of a speed-time graph?
The starting speed of the object
The distance travelled
The time when the object reaches max speed.
The acceleration
Paliwanag
The y-intercept shows the value of speed when time is zero, so the initial or starting speed.