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On the Road

Four vehicles travelled on a road. What can you deduce from the times that they met?

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Parabolic Patterns

The illustration shows the graphs of fifteen functions. Two of them have equations y=x^2 and y=-(x-4)^2. Find the equations of all the other graphs.

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More Parabolic Patterns

The illustration shows the graphs of twelve functions. Three of them have equations y=x^2, x=y^2 and x=-y^2+2. Find the equations of all the other graphs.

What's That Graph?

Stage: 4 Challenge Level: Challenge Level:1
A 'temperature-time' graph has temperature on the vertical (y) axis and time on the horizontal (x) axis.
What would the temperature be after a short time has passed?
What would happen to the temperature as time passes?
 
A 'height-distance' graph has height on the vertical axis and distance on the horizontal axis...