Mathematics 0580 · IGCSE · Graphs in practical situations

Graphs in practical situations — practice question

Annette rides her bicycle for a distance of $70\text{ km}$ from Midville to Newtown. After leaving Midville, she travels for $1$ hour $30$ minutes at a steady speed of $20\text{ km/h}$, then pauses for $30$ minutes. She then completes the trip to Newtown at a steady speed of $16\text{ km/h}$. A distance-time grid is given, with the vertical axis marked Distance (km) from $0$ to $80$ and the horizontal axis marked Time (h) from $0$ to $5$.
(a)[3]

On the grid, draw the distance-time graph for the journey.

(b)[3]

Calculate the average speed for the whole journey.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: Straight line joining $(0,0)$ to $(1.5,30)$

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