ATAR Notes: Forum

VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Specialist Mathematics => Topic started by: VCE_2012 on August 17, 2012, 11:06:17 am

Title: Dilation by a factor of 3 in the y direction
Post by: VCE_2012 on August 17, 2012, 11:06:17 am

Would it be 'politically' correct in VCE (specialist) to describe a transformation of an ellipse by saying:
Dilation by a factor of 3 in the y direction?
Or would the examiners strictly prefer "dilation by a factor of 3 from the x-axis"?

Title: Re: Dilation by a factor of 3 in the y direction
Post by: fred42 on August 17, 2012, 02:04:41 pm

"Parallel to the y-axis" is perfectly correct.

Title: Re: Dilation by a factor of 3 in the y direction
Post by: kensan on August 17, 2012, 04:51:49 pm

Dilation factor of _ from the x-axis, dilation factor of _ parallel to the y-axis.
Either of those are fine :)