4.2 Exploration, example 3

Directions
For examples #1-4, visually find the line of reflection and write its equation in the space provided. After, confirm your answer by doing the following:[br][br][list=1][*]Use the line tool to construct the line of reflection on the graph[/*][*]Use the polygon tool to trace over the pre-image[/*][*]Use the reflection tool to reflect your polygon over the line[/*][/list][br]After, complete the table provided and write a coordinate rule for the reflection.
Example #3
Equation of the line of reflection
[br][table] [tr] [td][br] A[br] [/td] [td][br] (4,-7)[br] [/td] [td][br] B[br] [/td] [td][br] (2,-3)[br] [/td] [td][br] C[br] [/td] [td][br] (9,-1)[br] [/td] [/tr] [tr] [td][br] A’[br] [/td] [td][br]  [br] [/td] [td][br] B’[br] [/td] [td][br]  [br] [/td] [td][br] C’[br] [/td] [td][br]  [br] [/td] [/tr][/table]
A'=
B'=
C'=
Write a coordinate rule for this transformation.
Write down this rule in your notebook. You're going to need it for homework and future assessments!
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Information: 4.2 Exploration, example 3