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May 20th, 2012, 04:29 AM   #1
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glide reflection help.

Hey guys, could you please help me with this question and explain how you got the answer? I'm doing this self study and it's super difficult without a teacher.
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May 21st, 2012, 01:55 AM   #2
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Re: glide reflection help.

anyone??
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May 22nd, 2012, 02:10 PM   #3
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Re: glide reflection help.

bump?
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May 22nd, 2012, 02:20 PM   #4
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Re: glide reflection help.

Do you have any links to online resources regarding glide reflection? There doesn't seem to be enough information in the image you posted to solve the problem.
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May 22nd, 2012, 05:22 PM   #5
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1. The translation is approximately (x, y) (x - 4.5, y - 4.5).

2. Reflection in the line y = x and a translation that is approximately (x, y) (x + 4.5, y + 4.5).

Last edited by skipjack; November 5th, 2014 at 09:14 AM.
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May 23rd, 2012, 01:39 AM   #6
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Re: glide reflection help.

don't know if any of this info will help but these are the previous questions:

a) a photo that measures 5cm by 12 cm is enlarged to a width of 7cm

i) what is the scale factor of enlargement? = 7/5

ii) find length of enlargement. = 16.8cm

iii) find area of photo and enlargement. = photo= 60cm^2, enlargement= 117.6cm^2

iv) how many times larger is the enlargement? = 1.36x

v) how many times larger is the perimeter of enlargement? = 1.4x

b) calculate the coordinate of image P' of the point (3;5) after clockwise rotation about the origin through an angle of 210 degrees. I've also been having difficulty with this. (Could anyone perhaps help with this as well? Thanks.)
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May 23rd, 2012, 02:05 PM   #7
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(b) The rotation matrix would be , where $\theta$ is the clockwise rotation angle.

Last edited by skipjack; November 5th, 2014 at 09:16 AM.
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