Question

Find the coordinate of L' after a Glide reflection of the triangle: translation 3 units down and 1 unit left then a reflection across the line x = -1.

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Answer 1

b. (2,0)

Explanation:

L: (-3,3)

3 units down

(-3,0)

1 unit left

(-4,0)

After reflection:

(2,0)

Answer 2

Answer: b. (2, 0)

Explanation:

L = (-3, 3)

down 3 units means subtract 3 from the y-coordinate

new L = (-3, 0)

left 1 units means subtract 1 from the x-coordinate

newer L = (-4, 0)

reflection across x = -1 means measure the distance of the x-coordinate from x = -1 and move it to the other side that same distance. (-4 - (-1) = 3. --> -1 + 3 = 2

L' = (2, 0)