Math Problem Statement

The vertices of a quadrilateral are P(-1, -1), Q(0, 4), R(3, 1), and S(1, -2). Draw the figure and its image after a translation 3 units left and 2 units up.

Solution

Let's break down the problem step-by-step:

1. Initial Coordinates of the Quadrilateral

The vertices of the quadrilateral are:

  • P(1,1)P(-1, -1)
  • Q(0,4)Q(0, 4)
  • R(3,1)R(3, 1)
  • S(1,2)S(1, -2)

2. Translation Rule

You are asked to translate the quadrilateral 3 units to the left and 2 units up. Mathematically, this means:

  • Subtract 3 from the x-coordinates.
  • Add 2 to the y-coordinates.

3. Applying the Translation

Let's calculate the new coordinates after translation:

  • For P(1,1)P(-1, -1):

    • New x-coordinate: 13=4-1 - 3 = -4
    • New y-coordinate: 1+2=1-1 + 2 = 1
    • New position: P(4,1)P'(-4, 1)
  • For Q(0,4)Q(0, 4):

    • New x-coordinate: 03=30 - 3 = -3
    • New y-coordinate: 4+2=64 + 2 = 6
    • New position: Q(3,6)Q'(-3, 6)
  • For R(3,1)R(3, 1):

    • New x-coordinate: 33=03 - 3 = 0
    • New y-coordinate: 1+2=31 + 2 = 3
    • New position: R(0,3)R'(0, 3)
  • For S(1,2)S(1, -2):

    • New x-coordinate: 13=21 - 3 = -2
    • New y-coordinate: 2+2=0-2 + 2 = 0
    • New position: S(2,0)S'(-2, 0)

4. Resulting Coordinates

The new coordinates of the quadrilateral after translation are:

  • P(4,1)P'(-4, 1)
  • Q(3,6)Q'(-3, 6)
  • R(0,3)R'(0, 3)
  • S(2,0)S'(-2, 0)

You can now plot these points on the graph for both the original and translated quadrilateral. Let me know if you'd like further assistance in drawing it!

Follow-Up Questions:

  1. What are the general rules for translating shapes on the coordinate plane?
  2. How would you apply a reflection instead of a translation to the quadrilateral?
  3. How would the process change if you translated 3 units right and 2 units down instead?
  4. What is the relationship between the original quadrilateral and its image after translation?
  5. How can you calculate the distance between corresponding points before and after the translation?

Tip: When translating any figure on the coordinate plane, remember that the shape, size, and orientation remain unchanged; only the position shifts.

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Math Problem Analysis

Mathematical Concepts

Coordinate Geometry
Translation

Formulas

Translation formula: (x, y) → (x - a, y + b)

Theorems

Translation in the coordinate plane

Suitable Grade Level

Grades 6-8