Students correct three ordered pair errors — coordinates reversed, starting direction wrong, and the origin at (1,1). Part B has four questions about x- and y-coordinates in given pairs. Part C has two questions about why (2,5) and (5,2) differ and correcting a reversed pair.
Correcting ordered pair errors — reversed coordinates, wrong plotting direction, and misplaced origin — establishes the three foundational rules students need before reading or writing any coordinate pairs.
Style:
Coordinate Plane
Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1. Fix the sentence:
The point at 3 right and 5 up is written as (5, 3).
Rewrite: The point at 3 right and 5 up is written as (3, 5).
2. Fix the sentence:
To reach point A at (4, 2), go up 4 and right 2 from the origin.
Rewrite: To reach point A at (4, 2), go right 4 and up 2 from the origin.
3. Fix the sentence:
The origin of the coordinate plane is located at (1, 1).
Rewrite: The origin of the coordinate plane is located at (0, 0).
Part B: Fill in the Blank
Write the missing word or number on each line.
1. In the ordered pair (7, 2), the x-coordinate is 7.
2. In the ordered pair (3, 8), the y-coordinate is 8.
3. A point at the origin is written as (0, 0).
4. The ordered pair (6, 0) lies on the x-axis.
Part C: Short Answer
Answer each question in one or two complete sentences.
1. Explain the difference between the points (2, 5) and (5, 2) on a coordinate plane.
The point (2, 5) is 2 units right and 5 units up from the origin, while (5, 2) is 5 units right and 2 units up. Switching the numbers changes the location because the first number is always the x-coordinate and the second is the y-coordinate.
2. Maya says the point 4 units right and 6 units up from the origin is (6, 4). Is she correct? Explain.
Maya is not correct. The correct ordered pair is (4, 6). The x-coordinate comes first and shows distance right, so 4 right means x = 4. The y-coordinate shows distance up, so 6 up means y = 6.
Coordinate Plane
★ Part A: Fix the Sentence
Each sentence has an error. Rewrite it correctly on the line.
1) Fix the sentence:
The point at 3 right and 5 up is written as (5, 3).
Rewrite: The point at 3 right and 5 up is written as (3, 5).
2) Fix the sentence:
To reach point A at (4, 2), go up 4 and right 2 from the origin.
Rewrite: To reach point A at (4, 2), go right 4 and up 2 from the origin.
3) Fix the sentence:
The origin of the coordinate plane is located at (1, 1).
Rewrite: The origin of the coordinate plane is located at (0, 0).
★ Part B: Fill in the Blank
Write the missing word or number on each line.
1) In the ordered pair (7, 2), the x-coordinate is 7.
2) In the ordered pair (3, 8), the y-coordinate is 8.
3) A point at the origin is written as (0, 0).
4) The ordered pair (6, 0) lies on the x-axis.
★ Part C: Short Answer
Answer each question in one or two complete sentences.
1) Explain the difference between the points (2, 5) and (5, 2) on a coordinate plane.
The point (2, 5) is 2 units right and 5 units up from the origin, while (5, 2) is 5 units right and 2 units up. Switching the numbers changes the location because the first number is always the x-coordinate and the second is the y-coordinate.
2) Maya says the point 4 units right and 6 units up from the origin is (6, 4). Is she correct? Explain.
Maya is not correct. The correct ordered pair is (4, 6). The x-coordinate comes first and shows distance right, so 4 right means x = 4. The y-coordinate shows distance up, so 6 up means y = 6.
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