192k views
0 votes
What is the image point of (0,1) after the transformation D4 R90?
Please and thank you

What is the image point of (0,1) after the transformation D4 R90? Please and thank-example-1
User Austensen
by
3.6k points

1 Answer

5 votes

Answer:

Image point → (-4, 0)

Explanation:

Coordinate of a point → (0, 1)

Rule for the transformation has been given as,

D₄ o R₉₀

First use R₉₀ → Rotation of the point by 90° counterclockwise

Rule for the rotation of a point (x, y) by 90° counterclockwise about the origin,

(x, y) → (-y, x)

(0, 1) → (-1, 0)

Further use D₄ → Dilation of the point by a scale factor of 4 about the origin

If a point (x, y) is dilated by a scale factor 'k' about the origin rule for the dilation is,

(x, y) → (kx, ky)

By applying this rule,

(-1, 0) → (-4, 0)

Therefore, image point will be → (-4, 0)

User SEJU
by
4.2k points