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Enlargement by a negative scale factor

December 1, 2015 by Simon Leave a Comment

Enlargement by a negative scale factor

 

 

 

 

 

 

GCSE mathematics enlargement by a negative scale factor questions appear on many exam papers and you can download the questions here.

The main things to remember when working with these types of questions are:

  • Always draw the ‘lines of enlargement’ as accurately as possible – they really help to show where the new shape will be
  • Work from the centre of enlargement using the x axis and the y axis
  • Make sure you clearly label the new shape you have drawn
  • Look for the 1 mark questions that ask to quote the scale factor, easy to miss in an exam

If you’d like to ask for any more detail, or you’re not sure about anything, please do ask a question in the comments section. I’ll let you know as soon as I’ve posted an answer.

The answer videos are given below. To try to shorten the video length (!), I’ve only answered questions 2, 3 and 7, although here’s the complete worked answers.

All very best with your studies.

Q2

Q3

Q7

Watch these videos on YouTube:

Q2 Enlargement by a negative scale factor  

Q3 Enlargement by a negative scale factor  

Q7 Enlargement by a negative scale factor  

 

 

 

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