Reflections

Can you spot the reflection of this shape?

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Level 1 What is this transformation?

(x, y) ----> (-x, y)

• Reflect over the x axis

• Reflect over the y-axis

• Slide down 1

• slide left 1

Level 1 True or false: When a point is reflected across a line of symmetry, it remains the same distance from the line.

• true

• false

Level 1 Reflections over the x-axis change the ____-__________.

• y-coordinate

• x-coordinate

Level 2 When a figure is reflected over a line of reflection, the new image is congruent to the original. True or False

• True

• False

Level 3 ∆QRS contains the points: Q(4, 2) R(5, 1) S(3,7). If the triangle is reflected across the y-axis, what will S' be?

• S'(3, 7)

• S'(-3, 7)

• S'(-3, -7)

• S'(3, 7)

Level 3 ∆BCD contains the points: B(2,3) C(2,1) D(5,1). If the triangle is reflected across the x-axis, what will B' be?

• B'(2, -3)

• B'(-2, 3)

• B'(-2, -3)

• B'(2, 3)

Reflect the point (2, -4) over the y-axis.

• (-4, 2)
• (-2, 4)
• (-2, -4)
• (2, 4)

Reflect (6, -3) over the line x-axis.

• (6, 3)
• (-6, -3)
• (-3, 6)
• (3, -6)

Which answer shows a reflection across the x-axis?

• d
• c
• b
• a