Math Problem Statement

Point P(-5,7) is translated four units right and nine units down, followed by a reflection over the x axis. What is the final image point?

Solution

To find the final image point, we will perform the transformations step by step:

Step 1: Translate Point P(5,7)P(-5, 7)

  • Four units right: Add 4 to the x-coordinate:
    5+4=1-5 + 4 = -1
  • Nine units down: Subtract 9 from the y-coordinate:
    79=27 - 9 = -2

Thus, after translation, the point becomes (1,2)(-1, -2).

Step 2: Reflect Over the X-Axis

  • In reflection over the x-axis, the x-coordinate remains the same, but the y-coordinate is negated.
    x=1x = -1 (no change)
    y=(2)=2y = -(-2) = 2

Thus, the final image point is (1,2)(-1, 2).


Would you like me to elaborate further on any part of the transformations? Here are five related questions to deepen your understanding:

  1. What happens when a point is reflected over the y-axis instead of the x-axis?
  2. Can you describe the effect of translating a point diagonally?
  3. How do you find the midpoint between the original point and the final image?
  4. What is the formula for a general reflection over the origin?
  5. What changes if the translation happens before the reflection?

Tip: Always apply transformations step-by-step and verify the order of operations in composite transformations!

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Transformations
Translation
Reflection

Formulas

Translation formula: (x + a, y + b)
Reflection over x-axis formula: (x, -y)

Theorems

Properties of Translation
Properties of Reflection

Suitable Grade Level

Grades 6-8