If the coordinates of point A are (x, y ) the coordinates of point A´ after rotation will be (-y, x)
Example: A ( 2,3 ) and A´( -3, 2 )
Answer: Twice
Explanation: With quadratic functions they are usually represented by parabolas and they can cross the x axis only once or twice :)
The answer to this is mountains
Answer:
Since it's a paper about the rate of immigration and emigration, you could choose 2 countries from your top 10 list, and say that it surprises you that one has a high immigration rate, and that the other has a high emigration rate. For the spatial geography idea, try choosing a country and explaining why it;s included on the graph, for example, Germany, and what significance it has to the data.