Math Problem Statement

The image point of A after a translation left 3 units and down 3 units is the point B(-8, -3). Determine the coordinates of the pre-image point A.

Solution

The problem states that the image point of AA after a translation left 3 units and down 3 units is the point B(8,3)B(-8, -3). We need to determine the coordinates of the pre-image point AA.

To reverse a translation:

  • A translation left by 3 units means to go right by 3 units.
  • A translation down by 3 units means to go up by 3 units.

Given point B(8,3)B(-8, -3), to find AA:

  • Reverse the horizontal shift: Add 3 to the x-coordinate of BB. 8+3=5-8 + 3 = -5
  • Reverse the vertical shift: Add 3 to the y-coordinate of BB. 3+3=0-3 + 3 = 0

Thus, the coordinates of the pre-image point AA are: A(5,0)A(-5, 0)

Would you like more details, or do you have any other questions?

Here are 5 related questions for further exploration:

  1. What happens if the translation had been up instead of down?
  2. How do you determine the new coordinates after a different type of transformation (e.g., reflection)?
  3. How can translations be represented algebraically?
  4. What is the geometric interpretation of translating a shape or point?
  5. What happens if you translate a point in both directions (left-right and up-down)?

Tip: When reversing translations, always think of "undoing" the steps applied, such as moving in the opposite direction.

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Math Problem Analysis

Mathematical Concepts

Translation
Coordinate Geometry

Formulas

Translation formula: (x', y') = (x + h, y + k)

Theorems

Translation Theorem

Suitable Grade Level

Grades 6-8