Change one equation in this pair of simultaneous equations very
slightly and there is a big change in the solution. Why?
How many intersections do you expect from four straight lines ? Which three lines enclose a triangle with negative co-ordinates for every point ?
When I park my car in Mathstown, there are two car parks to choose
from. Which car park should I use?
The ideas in this problem lead on from Which Is Cheaper?
Which is bigger, $n+10$, or $2n+3$?
How did you decide?
Can you explain why they have come to different conclusions?
Is there a diagram you could draw that would help?
For the following pairs of expressions, can you work out when each expression is bigger?
Find three expressions so that one of them is the biggest regardless of the value of $n$.
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