Swapping & Negating: Problem Solving & Reasoning
Mathematics
Year 9
10 questions
~20 mins
1 views0 downloads
About This Worksheet
A worksheet exploring Swapping & Negating in the context of Reflection across y=-x, designed to develop procedural skills and reasoning.
Worksheet Preview
Full preview • 10 questions
Swapping & Negating: Problem Solving & Reasoning
Subject: MathematicsGrade: Year 9
Name:
Date:
TeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizzTeachWhizz
Untitled Worksheet
Grade Year 9
A
Practice Questions
Answer all questions. Show your working in the grid spaces provided.
1.
Reflect the point (3, -5) across the line y = -x. What are the coordinates of the reflected point?
[2 marks]2.
Given the point (-2, 4), perform the swapping and negating process to find its reflection across y = -x.
[3 marks]3.
Plot the graph of y = 2x and then reflect the point (1, 2) across y=-x. Describe the steps and draw the reflected point on the grid.
[3 marks]4.
Construct a triangle with vertices at (2, 3), (4, -1), and (0, 0). Reflect the entire triangle across y = -x. State the new coordinates of each vertex.
[4 marks]5.
A point moves from (5, -2) to its reflection across y = -x. Is the new point obtained by swapping the coordinates and negating the new x-coordinate? Explain.
[2 marks]6.
Identify the error: The point (7, -4) reflected across y=-x is at (4, -7). Is this correct? If not, correct the mistake.
[2 marks]7.
If a point is at (-6, 3), what is its reflection across y=-x? Show your working.
[2 marks]8.
A real-world scenario: A drone's position is at (4, -3). It needs to reflect its position across y = -x to navigate to a new point. What are the new coordinates?
[3 marks]9.
Challenge: Find a point on the grid that, when reflected across y=-x, lands at (2, -8). What is the original point?
[3 marks]10.
Mixed review: Reflect the point (0, -7). Describe the steps involved and provide the reflected point.
[2 marks]Quick Actions
What is Remix?
Create a new worksheet based on this one. Change the grade level, topic, number of questions, or difficulty - then generate a fresh version.
- • Change grade level (Grade 6 → Grade 7)
- • Swap topics (Harry Potter → Macbeth)
- • Add more questions (10 → 15)
- • Adjust difficulty
Details
- Created
- 1/1/2026
- Updated
- 1/1/2026
- Type
- worksheet