Math Problem Statement
Solution
To determine the scale factor for the dilation, we need to compare the distances between corresponding points before and after the dilation.
From the image:
- is mapped to ,
- is mapped to ,
- is mapped to .
Let's calculate the distance between a pair of corresponding points. We will calculate the distance between and before and after the dilation.
Coordinates of the points:
We can calculate the scale factor by finding the ratio of the distances from the origin to the original point and the dilated point .
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Distance from the origin to :
-
Distance from the origin to :
The scale factor is the ratio of the distance from the origin to over the distance to :
Conclusion:
The scale factor of the dilation is 2.
Do you want more details or have any questions?
Here are some related questions:
- How do you verify if the dilation is centered at the origin?
- Can a dilation have a fractional scale factor?
- How do you find the scale factor if the dilation is not centered at the origin?
- What happens to angles during a dilation?
- How does dilation affect the area of a shape?
Tip: In dilation, the corresponding sides of the preimage and image are proportional by the scale factor, but angles remain unchanged.
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Math Problem Analysis
Mathematical Concepts
Dilation
Transformations
Geometry
Ratios
Formulas
Distance formula: d = √((x2 - x1)^2 + (y2 - y1)^2)
Scale factor: k = distance_after / distance_before
Theorems
Dilation Theorem
Suitable Grade Level
Grades 8-10
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