Math Problem Statement

What is the image of left parenthesis, 5, comma, minus, 4, right parenthesis(5,−4) after a dilation by a scale factor of 44 centered at the origin?

Solution

To determine the image of the point (5,4)(5, -4) after a dilation by a scale factor of 4444 centered at the origin, we apply the following rule:

(x,y)=(kx,ky)(x', y') = (k \cdot x, k \cdot y)

where:

  • (x,y)(x, y) is the original point,
  • kk is the scale factor,
  • (x,y)(x', y') is the new point after dilation.

Given:

  • (x,y)=(5,4)(x, y) = (5, -4),
  • k=44k = 44.

We calculate:

  1. x=445=220x' = 44 \cdot 5 = 220,
  2. y=44(4)=176y' = 44 \cdot (-4) = -176.

Thus, the image of (5,4)(5, -4) is:

(220,176)(220, -176)


Would you like a detailed explanation of the dilation process or an example with a different scale factor?

Here are 5 related questions to explore further:

  1. What happens to a point when dilated with a scale factor of k=1k = 1?
  2. How does the origin affect dilation transformations?
  3. What are the coordinates of (5,4)(5, -4) after a dilation with a scale factor of 12\frac{1}{2}?
  4. How do you determine the scale factor given the original and transformed points?
  5. How does dilation differ from other transformations like reflection or translation?

Tip: When scaling points, remember that a scale factor k>1k > 1 enlarges the figure, while 0<k<10 < k < 1 reduces it.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Dilation
Transformations

Formulas

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

Theorems

Dilation Transformation Rule

Suitable Grade Level

Grades 8-10