Gross Warren
12/25/2023 · Senior High School
Triangle \( P Q R \) has coordinates \( P(-1,5), Q(1,2) \), and \( R(-3,-1) \). Determine the coordinates of the vertices of the image after a reflection in the \( x \). axis. \( \begin{array}{l}\text { A) } P^{\prime}(-1,-5)\left(Q^{\prime}(1,-2) \text {, and } R^{\prime}(-3,1)\right. \\ \text { D) } P^{\prime}(5,-1), Q^{\prime}(2,-1) \text {, and } R^{\prime}(1,-3) \\ \text { C) } P^{\prime}(1,5), Q^{\prime}(-1,2) \text {, and } R^{\prime}(3,-1) \\ \text { D) } P^{\prime}(-1,-5), Q^{\prime}(-1,-2) \text {, and } R^{\prime}(-3,-1)\end{array} \)
UpStudy ThothAI Solution
Tutor-Verified Answer
Step-by-step Solution
To find the coordinates of the vertices of triangle \( PQR \) after a reflection in the \( x \)-axis, we need to apply the reflection transformation to each vertex.
The reflection of a point \( (x, y) \) in the \( x \)-axis results in the point \( (x, -y) \).
Let's apply this transformation to each vertex:
1. For point \( P(-1, 5) \):
\[
P' = (-1, -5)
\]
2. For point \( Q(1, 2) \):
\[
Q' = (1, -2)
\]
3. For point \( R(-3, -1) \):
\[
R' = (-3, 1)
\]
Now we have the coordinates of the reflected points:
- \( P'(-1, -5) \)
- \( Q'(1, -2) \)
- \( R'(-3, 1) \)
Thus, the coordinates of the vertices of the image after the reflection in the \( x \)-axis are:
\[
P'(-1, -5), Q'(1, -2), R'(-3, 1)
\]
Looking at the options provided, the correct answer is:
\[
\text{A) } P'(-1, -5), Q'(1, -2), R'(-3, 1)
\]
Quick Answer
The correct answer is A) \( P'(-1, -5), Q'(1, -2), R'(-3, 1) \).
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