Math Problem Statement

The figure below is dilated by a factor of 2 centered at the origin. What is the coordinate of point N'?

Solution

The problem asks for the coordinates of point NN' after the figure is dilated by a factor of 2, centered at the origin. Here's how to solve it step-by-step:

Step 1: Understanding dilation

A dilation centered at the origin with a factor of kk scales each point by multiplying its xx- and yy-coordinates by kk. For this question: k=2k = 2

Step 2: Original coordinates of point NN

From the graph, the original coordinates of point NN are: N=(3,1)N = (-3, -1)

Step 3: Apply the dilation formula

Using the dilation formula: (x,y)=(kx,ky)(x', y') = (k \cdot x, k \cdot y) Substitute k=2k = 2 and N=(3,1)N = (-3, -1): x=2(3)=6x' = 2 \cdot (-3) = -6 y=2(1)=2y' = 2 \cdot (-1) = -2

Step 4: New coordinates of NN'

The coordinates of NN' after the dilation are: N=(6,2)N' = (-6, -2)

Final Answer:

The correct answer is: (6,2)\boxed{(-6, -2)}

Let me know if you'd like additional explanations or have questions!

Related Questions:

  1. What is the general formula for dilating a point centered at a specific origin?
  2. How does the scale factor affect the size and position of the figure?
  3. What happens to a point's coordinates if the scale factor is less than 1?
  4. How would the coordinates of NN' change if the center of dilation were not the origin?
  5. Can dilation change the orientation of a shape? Why or why not?

Tip:

Always check the center of dilation when applying a transformation—it determines how each point is scaled and shifted!

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Transformations
Dilations

Formulas

(x', y') = (k * x, k * y)

Theorems

Dilation Theorem

Suitable Grade Level

Grades 8-10