in the photos Bridge on the A3 UK Bridge on a road to Winchester UK Bridge over the River T hames London UK Covent Garden Market Stall Stand London UK Iron Bridge the oldest iron bridge in the UK ID: 465422
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Slide1
Some of these photos are on Geometer’s Sketch Pad which we will use to find the equation of the curves
in the photos.Slide2
Bridge on the A3, UKSlide3
Bridge on a road to Winchester, UKSlide4
Bridge over the River
T
hames, London, UKSlide5
Covent Garden Market Stall Stand, London, UKSlide6
Iron Bridge the oldest iron bridge in the UKSlide7
Otway Ranges, Australia (there was a sign here saying “No Camping”, but people still camped there. So the authorities put up a new sign saying “No Camping – Tiger Snakes”. Now no one camps there.)Slide8
London, UKSlide9
Winchester, UKSlide10
Bridge at the intersection of the Grand Canal & Regent’s Canal, London, UKSlide11
Back in Hampshire, UK, some very keen BMXs would build themselves ramps like this in the forest. …
… The local government would bulldoze down the ramps and they would come back with their shovels and rebuild them. Why …
… So they could fly through the trees. The local government eventually gave them the land to use
What is the equation of the curve in the middle photo?Slide12
Sheet Common, Hampshire, UKSlide13
Sheet Common, Hampshire, UKSlide14
We will find the equations of these
parabolas (using GSP or Autograph) later,
but first we need to learn what happens
when:
we
add to
x
2
;
subtract from
x
2
;
multiply x
2
by a whole number, fraction or negative; add
and subtract numbers to x then square
it; and a combination of these.