Math Problem Statement

The diagram shows a shaded shape on a grid. Reflect the shape in the line with equation x = 6.

Solution

To solve this question, we need to reflect the shaded triangle across the vertical line x=6x = 6. Here's the step-by-step process:

  1. Identify the vertices of the triangle: From the image, the coordinates of the vertices of the triangle appear to be approximately:

    • (2,5)(2, -5)
    • (4,7)(4, -7)
    • (3,3)(3, -3)
  2. Reflect the points: When reflecting across the line x=6x = 6, the distance of each point from x=6x = 6 will remain the same, but the new xx-coordinate will be adjusted accordingly. The formula for reflecting a point (x,y)(x, y) is: x=2×6x,y=yx' = 2 \times 6 - x, \quad y' = y Applying this formula to each vertex:

    • For (2,5)(2, -5):
      x=2×62=10,y=5x' = 2 \times 6 - 2 = 10, \, y' = -5, so the new point is (10,5)(10, -5).
    • For (4,7)(4, -7):
      x=2×64=8,y=7x' = 2 \times 6 - 4 = 8, \, y' = -7, so the new point is (8,7)(8, -7).
    • For (3,3)(3, -3):
      x=2×63=9,y=3x' = 2 \times 6 - 3 = 9, \, y' = -3, so the new point is (9,3)(9, -3).
  3. Draw the reflected triangle: Plot the new points (10,5)(10, -5), (8,7)(8, -7), and (9,3)(9, -3) on the grid. Connect these points to form the reflected triangle.

If you'd like, I can provide a visualization or further clarification of the process. Let me know!

Here are some follow-up questions:

  1. What are the mathematical rules for reflecting shapes across vertical and horizontal lines?
  2. How would you reflect a shape across the line y=cy = c?
  3. How can reflection properties help in understanding symmetry?
  4. What is the significance of maintaining distances during reflections?
  5. Can reflections be used to solve real-world problems involving symmetry?

Tip: Always check the reference line (e.g., x=6x = 6) carefully to ensure accurate calculations.

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Math Problem Analysis

Mathematical Concepts

Geometric Transformations
Reflection
Coordinate Geometry

Formulas

x' = 2c - x (for reflecting across a vertical line x = c)
y' = y (the y-coordinate remains the same during vertical reflections)

Theorems

Reflection preserves distance and orientation

Suitable Grade Level

Grades 7-9