Co-ordinate Geometry

[kpkanupriyakhmi]

In a graph like h(x)
if ch(x)
if c>1:-skinny
if c<1:-widened
Does this hold even in parabolas?
Please reply ASAP.

[tommywallach]

Hey Kp,

I have no idea what you're talking about. What is h(x)?

-t

[kpkanupriyakhmi]

Its any function.
c is constant.

[n00bpron00bpron00b]

If this is what you are looking for -

For a parabola with equation

y = x^2

The coefficient associated with "x" determines the shape of parabola

If the coefficient of "x" is grater than 1 - skinny/shrink parabola

ex. y = 4 (x)^2

If the coefficient of "x" is less than 1 - widened parabola

ex. y = 1/2 (x)^2

The more the coefficient of "x" increases greater than 1 the skinnier the parabola ; and the more it reduces less than 1 the more wider the parabola

[tommywallach]

Great addition from Noob.

Side note, kp, a function is not inherently a parabola, so it's incorrect to say it's "any function." You mean it's any parabola, in which case issues of skinny/wide come up.

In my experience, you do not need to know the rules of parabola manipulation to do any GRE questions, but perhaps I've just never gotten one. :)

-t