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Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.2: Exponents And Radicals
Problem 27E
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**Exercise: Dilations in the Coordinate Plane**

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**Problem 3:**

Given that line segment \( \overline{AB} \) has coordinates \( A(-3, 9) \) and \( B(6, -12) \), determine the coordinates of \( A'B' \) after a dilation with a scale factor of \(\frac{2}{3}\) centered at the origin.

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**Diagram Explanation:**

The provided graph on the right side of the document consists of a standard Cartesian coordinate plane. The x-axis and y-axis intersect at the origin \((0, 0)\). The axes extend from -9 to 9 with grid lines clearly marked, providing a visual aid for plotting points and performing transformations such as dilations.

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When performing the dilation:

- Multiply each coordinate of the points by the scale factor \(\frac{2}{3}\).
- New coordinates for \( A' \) would be \(\left(\frac{2}{3} \times -3, \frac{2}{3} \times 9\right)\).
- New coordinates for \( B' \) would be \(\left(\frac{2}{3} \times 6, \frac{2}{3} \times -12\right)\).

Carefully plot these new points on the graph to visualize the dilation effect.
Transcribed Image Text:**Exercise: Dilations in the Coordinate Plane** --- **Problem 3:** Given that line segment \( \overline{AB} \) has coordinates \( A(-3, 9) \) and \( B(6, -12) \), determine the coordinates of \( A'B' \) after a dilation with a scale factor of \(\frac{2}{3}\) centered at the origin. --- **Diagram Explanation:** The provided graph on the right side of the document consists of a standard Cartesian coordinate plane. The x-axis and y-axis intersect at the origin \((0, 0)\). The axes extend from -9 to 9 with grid lines clearly marked, providing a visual aid for plotting points and performing transformations such as dilations. --- When performing the dilation: - Multiply each coordinate of the points by the scale factor \(\frac{2}{3}\). - New coordinates for \( A' \) would be \(\left(\frac{2}{3} \times -3, \frac{2}{3} \times 9\right)\). - New coordinates for \( B' \) would be \(\left(\frac{2}{3} \times 6, \frac{2}{3} \times -12\right)\). Carefully plot these new points on the graph to visualize the dilation effect.
# Problem Statement

**Question 4:**

Line segment \( PQ \) has coordinates \( P(3, -6) \) and \( Q(3, 9) \). Find the coordinates of \( P'Q' \) after a dilation with a scale factor of \(\frac{1}{5}\) centered at \( (3, -1) \).

# Graph Explanation

The image includes a coordinate grid that displays both negative and positive values on the x and y axes. Each axis is marked with units ranging from -9 to 9. The grid can be used to plot the coordinates of points and visualize transformations such as the dilation described in the problem statement.
Transcribed Image Text:# Problem Statement **Question 4:** Line segment \( PQ \) has coordinates \( P(3, -6) \) and \( Q(3, 9) \). Find the coordinates of \( P'Q' \) after a dilation with a scale factor of \(\frac{1}{5}\) centered at \( (3, -1) \). # Graph Explanation The image includes a coordinate grid that displays both negative and positive values on the x and y axes. Each axis is marked with units ranging from -9 to 9. The grid can be used to plot the coordinates of points and visualize transformations such as the dilation described in the problem statement.
Expert Solution
Step 1

Given:

1. AB¯ has coordinates A-3,9 and B6,-12. 2. PQ¯ has coordinates P3,-6 and Q3,9. 

To Find:

1.  Find the coordiante A'B'¯ after a dilation with a scale factor of 23centered at the origin.2.  Find the coordiante P'Q'¯ after a dilation with a scale factor of 15 centered at the 3,-1.

Concept:

1. Dilation with center at Origin:DO,kx,y=kx,ky, whereO=center of dilation at 0,0k=scale factor2. Dilation with center not at Origin:DO,kx,y=kx-a+a,ky-b+b, whereO=center of dilation at a,bk=scale factor

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