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Mathematics 15 Online
OpenStudy (adajiamcneal):

Last Question @bibby please.

OpenStudy (adajiamcneal):

would it be d?

OpenStudy (bibby):

first, we'll do the "glide" work backwards. if we push the point down 5 y units and end up (-8.-3) what was the point before the glide?

OpenStudy (adajiamcneal):

what? um. . . you worded that confusingly but im assuming the answer to your question would be -3? when its glided it would be -8 (again assuming) so that is why im getting D

OpenStudy (bibby):

I'll draw it out on a graph again

OpenStudy (bibby):

what we have is the red point. This was after we applied the transformation \((x,y)\longrightarrow (x,y-5)\) (meaning go DOWN 5 units, right?)

OpenStudy (bibby):

forgot the graph

OpenStudy (bibby):

so if we're working in reverse we have to go up 5 units

OpenStudy (adajiamcneal):

ohhhhhhhh would it be (-8, 2) ? B?

OpenStudy (bibby):

yes! what we have now is the green point but we have to complete the reflection part of the "glide reflection" by flipping it over the purple line

OpenStudy (adajiamcneal):

laaawwwwwwwd thats confusing. is there any way you can dumb it down?

OpenStudy (adajiamcneal):

because theres no purple line on the graph you showed me

OpenStudy (bibby):

please kill me

OpenStudy (bibby):

forgot to update it

OpenStudy (adajiamcneal):

im sorry xD

OpenStudy (bibby):

sorry my brain is all over the place. talking to like 6 different people, sensory overload

OpenStudy (adajiamcneal):

it would end up -2, 2

OpenStudy (bibby):

yeah

OpenStudy (adajiamcneal):

ok thank you so much :) ill leave you alone now

OpenStudy (bibby):

it's cool, you're not bothering me

OpenStudy (bibby):

to test it out, reperform the glidereflection in the different orders 1) start with (-2,2) reflect over x=-5, perform the (x,y-5) translation 2) start with (-2,2) perform the (x,y-5) translation, reflect over x=-5,

OpenStudy (adajiamcneal):

-3, 2

OpenStudy (adajiamcneal):

i believe

OpenStudy (bibby):

which one are you doing, is that method 1 after the reflection?

OpenStudy (adajiamcneal):

yeeah i think so

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