The coordinate plane and reflections
Answers are for parents and teachers.
1
Plot the points A(2, 4), B(−3, 1), C(−1, −4) and D(5, −2) on squared paper and name the quadrant of each.
A: Quadrant I. B: Quadrant II. C: Quadrant III. D: Quadrant IV.
2
Write the coordinates of the origin and of a point 6 units to the right of it on the x-axis.
The origin is (0, 0). The other point is (6, 0).
3
Reflect (−7, 3) across the x-axis and across the y-axis.
Across the x-axis: (−7, −3). Across the y-axis: (7, 3).
4
A point and its reflection across the y-axis are (a, 4) and (−6, 4). What is a?
a is the opposite of −6, so a = 6.
5
Mariam writes (4, −2) for a point that is 2 units right and 4 units down. Find her error and correct it.
She swapped x and y. The correct pair is (2, −4).