Math Problem Statement

What are the scale factor and center of the dilation?

Solution

To determine the scale factor and the center of dilation from the graph, we follow these steps:


1. Find the Scale Factor

The scale factor compares the distances from the center of dilation to a point on the preimage L,M,N,OL, M, N, O and the corresponding image points L,M,N,OL', M', N', O'.

  • First, identify the coordinates of points:
    • L=(2,3)L = (2, 3) and L=(4,6)L' = (4, 6)
    • M=(3,5)M = (3, 5) and M=(6,10)M' = (6, 10)
    • N=(5,4)N = (5, 4) and N=(10,8)N' = (10, 8)
    • O=(4,2)O = (4, 2) and O=(8,4)O' = (8, 4)

Now, calculate the distances between corresponding points:

Scale factor=distance to image pointdistance to preimage point\text{Scale factor} = \frac{\text{distance to image point}}{\text{distance to preimage point}}

By comparing the coordinates:

  • From LL to LL':
    Scale factor=42=2\text{Scale factor} = \frac{4}{2} = 2
  • From MM to MM':
    Scale factor=63=2\text{Scale factor} = \frac{6}{3} = 2

Thus, the scale factor is 2.


2. Find the Center of Dilation

The center of dilation is the point from which all the dilations are performed. To locate it:

  1. Draw lines connecting each preimage point L,M,N,OL, M, N, O to its corresponding image point L,M,N,OL', M', N', O'.
  2. Extend these lines. The point where they intersect is the center of dilation.

From observation, the center of dilation is at the origin (0,0)(0, 0).


Final Answer:

  • Scale factor: 22
  • Center of dilation: (0,0)(0, 0)

Do you need further clarification or help with any part of the solution? Let me know!


Related Questions:

  1. How do you determine the center of dilation algebraically?
  2. Can a scale factor be negative, and what does it represent?
  3. What happens to a figure when the scale factor is 12\frac{1}{2}?
  4. How does dilation affect angles and side ratios in a figure?
  5. If the scale factor were 3, what would happen to the coordinates of LMNOLMNO?

Tip:

To confirm the center of dilation, always test multiple points and verify where the connecting lines intersect.

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Math Problem Analysis

Mathematical Concepts

Dilation
Transformations
Scale Factor
Center of Dilation

Formulas

Scale factor = distance to image point / distance to preimage point

Theorems

Properties of Dilations
Proportionality of Distances in Dilations

Suitable Grade Level

Grade 8-10