Real-life graphs Quiz

1. A graph converts kilometres to miles and $10$ km is $6.2$ miles. How many miles is $50$ km?

• A. $62$
• B. $31$
• C. $12.4$
• D. $310$

2. On a distance–time graph, which statement is true?

• A. A steeper line means a greater speed.
• B. A steeper line means a longer distance.
• C. A horizontal line means constant speed.
• D. A line sloping down means the object is slowing.

3. A taxi charges $C=15+4n$ AED for $n$ km. What does $15$ represent?

• A. The cost per kilometre
• B. The cost of $4$ km
• C. The fixed starting charge
• D. The cost of $15$ km

4. A car travels $150$ km in $2.5$ hours. What is its average speed?

• A. $375$ km/h
• B. $62.5$ km/h
• C. $150$ km/h
• D. $60$ km/h

5. A distance–time graph returns to a distance of $0$. What does this show?

• A. The object has stopped.
• B. The object has returned to its start.
• C. The object has reached the end of its journey.
• D. The object has slowed down.