Plot (-7, -3), reflect it across y-axis, and give the reflected coordinates.
(7, -3)
Reverse the x sign: (7, -3).
Day 072Reflections and Coordinate Signs
Standards 6.NS.C.6b
LEARNING TARGET
I can reflect points across an axis using signs.
01 · LEARN
Build the idea
Across the x-axis, keep x and reverse the sign of y. Across the y-axis, reverse x and keep y. Across both axes, reverse both signs. The reflected point stays the same distance from the axis.
Plot (-4, -7), reflect it across both axes, and give the reflected coordinates.
(4, 7)
Reverse both signs: (4, 7).
02 · PRACTICE
Your turn
Work in order. Start with the foundations, then build toward explanation and application.
Plot (-8, 6), reflect it across x-axis, and give the reflected coordinates.
Plot (-2, -5), reflect it across y-axis, and give the reflected coordinates.
Plot (-5, 6), reflect it across x-axis, and give the reflected coordinates.
Plot (-4, -2), reflect it across y-axis, and give the reflected coordinates.
Plot (-7, 4), reflect it across x-axis, and give the reflected coordinates.
Plot (-2, -7), reflect it across y-axis, and give the reflected coordinates.
Plot (-2, 3), reflect it across both axes, and give the reflected coordinates.
Plot (-7, -3), reflect it across both axes, and give the reflected coordinates.
Plot (-6, 2), reflect it across both axes, and give the reflected coordinates.
Plot (-8, -7), reflect it across both axes, and give the reflected coordinates.
03 · CHECK
Answers and reasoning
Reveal the teacher answer key
- (-8, -6)
Reverse the y sign: (-8, -6).
- (2, -5)
Reverse the x sign: (2, -5).
- (-5, -6)
Reverse the y sign: (-5, -6).
- (4, -2)
Reverse the x sign: (4, -2).
- (-7, -4)
Reverse the y sign: (-7, -4).
- (2, -7)
Reverse the x sign: (2, -7).
- (2, -3)
Reverse both signs: (2, -3).
- (7, 3)
Reverse both signs: (7, 3).
- (6, -2)
Reverse both signs: (6, -2).
- (8, 7)
Reverse both signs: (8, 7).