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Four students are trying to find the rule that translates point \( N(-2,-4) \) to \( N^{\prime}(2,4) \). Each student's reasoning is shown below. \( \begin{array}{ll}\text { Raheem: } & \text { The rule is }(x \bullet(-1), y \bullet(-1)) \text { because }-2 \bullet(-1)=2 \text { and }-4 \bullet(-1)=4 \\ \text { Casey: } & \text { The rule is }(x+2, y+4) \text { because the image is }(2,4) \text {. } \\ \text { Andrew: } & \text { The rule is }(x+4, y+0) \text { because the coordinates are opposites. } \\ \text { Lo: } & \text { The rule is }(x+4, y+8) \text { because }-2+4=2 \text { and }-4+8=4 . \\ \text { Which student is correct? } \\ \text { Raheem } \\ \text { Casey } \\ \text { Andrew } \\ \text { Lo }\end{array} \)

Ask by Watkins Schneider. in the United States
Feb 04,2025

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Tutor-Verified Answer

Answer

Lo is correct because her rule \( (x + 4, y + 8) \) accurately translates point \( N(-2, -4) \) to \( N^{\prime}(2, 4) \).

Solution

To determine which student correctly identifies the rule that translates point \( N(-2, -4) \) to \( N^{\prime}(2, 4) \), let's evaluate each proposed rule: 1. **Raheem:** **Rule:** \( (x \times (-1), y \times (-1)) \) **Application:** \[ (-2 \times (-1), -4 \times (-1)) = (2, 4) \] **Analysis:** This correctly maps \( N \) to \( N^{\prime} \). However, this operation is a reflection through the origin, not a translation. 2. **Casey:** **Rule:** \( (x + 2, y + 4) \) **Application:** \[ (-2 + 2, -4 + 4) = (0, 0) \] **Analysis:** This maps \( N \) to \( (0, 0) \), which is incorrect. 3. **Andrew:** **Rule:** \( (x + 4, y + 0) \) **Application:** \[ (-2 + 4, -4 + 0) = (2, -4) \] **Analysis:** This maps \( N \) to \( (2, -4) \), which is incorrect. 4. **Lo:** **Rule:** \( (x + 4, y + 8) \) **Application:** \[ (-2 + 4, -4 + 8) = (2, 4) \] **Analysis:** This correctly maps \( N \) to \( N^{\prime}(2, 4) \). **Conclusion:** While Raheem's rule mathematically maps \( N \) to \( N^{\prime} \), it describes a reflection rather than a translation. Lo's rule correctly describes a translation that shifts \( N \) to \( N^{\prime} \). **Answer:** Lo

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Bonus Knowledge

Let's break down the reasoning of each student to identify the correct rule for translating point \( N(-2,-4) \) to \( N^{\prime}(2,4) \). Raheem's method, \((x \cdot(-1), y \cdot(-1))\), flips the coordinates to \( (2, 4) \) but doesn't involve addition; it just reflects the point over the origin. Casey suggests \((x+2, y+4)\), which translates the original point \( (-2, -4) \) correctly to \( (2, 4) \), making this the right choice. Andrew's and Lo's suggestions involve incorrect changes that don’t lead to the desired coordinates. Thus, Casey is the correct student! Now, let's take a quick peek into some fun and engaging facts related to this translation scenario. Mathematics isn't just about numbers—it's also a form of art! Many transformations, like translations, can be visually represented as movements of shapes on a graph. Just imagine sliding a triangle across the grid; it’s like a little dance party on paper! In the world of geometry, understanding transformations opens the door to advanced concepts like symmetry, which can be found in nature, architecture, and even art! If you're interested, consider diving into books about geometric transformations or exploring fractals where rule-based patterns thrive!

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