In transformations, what happens when you enlarge a shape by a scale factor of a negative number?

Ian
haha what? you can't enlarge something with a negative factor, that would be making it smaller...
Member #3 of the Breaking Benjamin Fanclub PM Electric7 to join.
you reflect it as well as enlarge it I would assume.
Quote by Spazz128735
you reflect it as well as enlarge it I would assume.

thats what i thought lol, but wanted to check :S
Quote by Spazz128735
you reflect it as well as enlarge it I would assume.

yep
"And after all of this, I am amazed...

...that I am cursed far more than I am praised."
it gets smaller ?
make it smaller
Spazz is correct.

You enlarge the lengths from the point of englargment, but in the opposite direction that the original shape is.
so it gets smaller, and is reflected in where?
Quote by Xn00bX
In transformations, what happens when you enlarge a shape by a scale factor of a negative number?

Ian

Cool!
I'm terrible at math. Sorry, I'd love to help a fellow Ian.
ah...i see..i remember now, the negative denotes a direction, not size
Member #3 of the Breaking Benjamin Fanclub PM Electric7 to join.
Quote by Spazz128735
you reflect it as well as enlarge it I would assume.

That.

[IN PHIL WE TRUST]

Quote by Trowzaa
I only play bots. Bots never abandon me. (´・ω・`)

ok, got it now i think!
it doesn't get smaller. it gets bigger.

basically apply the scale factor as if it wasn't negative. like 2 or 3, or whatever, then trace the shape and turn the page 180 degrees about the origin and plot again.
"And after all of this, I am amazed...

...that I am cursed far more than I am praised."
yeah haha, but the question had a scale factor of -1/2 x)
Quote by Spazz128735
you reflect it as well as enlarge it I would assume.

Indeed it does.

Quote by pavel
haha what? you can't enlarge something with a negative factor, that would be making it smaller...

lol. That's when you enlarge by a scale factor that's a decimal... Like 0.5 would be the shape but half the size, and half the distance from the point of enlargement.

Quote by Xn00bX
yeah haha, but the question had a scale factor of -1/2 x)

Then in that case, it'd be reflected and half the size / distance as the original image from the point of enlargement.

If that makes sense..
Oh sorry, one more question...

how would you rationalise the denominator of 2+ route3 / route 3?

would you times everything by route 3?
Wouldn't it just be 2 then?

I'm probably wrong, I dropped A level maths...
Quote by Dobzilla
Wouldn't it just be 2 then?

I'm probably wrong, I dropped A level maths...

haha im revising for my gcse test... TOMMORROW lol ahh well, better get to school early tommorrow to ask then