To calculate: The x -coordinate of the point A if the image is rotated 90 degrees counterclockwise then reflected over the line
Answer to Problem 5E
The x -coordinate of the point Ais
Explanation of Solution
Given information:
The image is rotated 90 degrees counterclockwise then reflected over the line
Calculation:
Consider the image is rotated 90 degrees counterclockwise then reflected over the line
The coordinates of
The vertex matrix form is provided below,
According to the question the polygon is rotated 90 degrees counterclockwise about the origin.
For the new coordinates of the polygon the old vertex matrix must be multiplied with
Therefore,
Now, the polygon is reflected over the line
Now, new coordinates are
Thus, the x -coordinate of the point Ais
Chapter 4 Solutions
Algebra 2
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