awsomeboy12345678
28.06.2019 •
Mathematics
Find the image of a (-6, 5) after two reflections, first across the line y = -5, then across the line x = -12. write your answer for both reflections or show your graph with each step. (2 points) a. reflection 1: y = -5 : b. reflection 2: x = -12 :
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Ответ:
a.
b.
Step-by-step explanation:
The given point is .
We want to find the image after this point has been reflected in the line .
Recall that, the mapping for a reflection in the line is
.
This implies that,
.
This simplifies to,
.
This will finally give us,
.
b. We now apply the second reflection, which is a reflection in the line .
Recall again that, the reflection in the line has the mapping
.
This implies that,
.
This implies that,
.
This will finally give us,
.
See graph in attachment.
Ответ: