GCSE Secondary Maths Age 13-17 - Graphs: Algebra - Explained

The video tutorial explains how to interpret a graph showing Carol's speed during a race. It covers calculating her speed at 3 seconds, identifying her greatest speed, and determining the times when her speed was 9 meters per second. The tutorial emphasizes careful graph reading and understanding the scale of the graph.

What is Carol's speed 3 seconds after the start of the race?

• 6.0 meters per second

• 6.2 meters per second

• 6.4 meters per second

• 6.6 meters per second

How is the speed scale divided on the graph?

• Each square represents 0.5 meters per second

• Each square represents 1 meter per second

• Each square represents 0.1 meters per second

• Each square represents 0.2 meters per second

What is Carol's greatest speed during the race?

• 9.6 meters per second

• 9.8 meters per second

• 10.2 meters per second

• 10.0 meters per second

At what times was Carol's speed exactly 9 meters per second?

• 3 seconds and 7 seconds

• 4 seconds and 8 seconds

• 5 seconds and 9 seconds

• 6 seconds and 10 seconds

How many times did Carol's speed reach 9 meters per second during the race?

• Once

• Twice

• Four times

• Three times