Thursday

August 28, 2014

August 28, 2014

Posted by **Melania** on Sunday, May 19, 2013 at 1:21am.

A triangle has vertices (1, 4), (1, 1), and (-3, 1). The triangle is dilated by a scale factor of 2, then translated 5 units up, and then rotated 90 degrees counterclockwise about the origin. What are the vertices of the image of the triangle?

- Algebra -
**Steve**, Sunday, May 19, 2013 at 5:52amdilate by 2: (x,y) -> (2x,2y)

up 5: (x,y) -> (x,y+5)

rotate: (x,y) -> (-y,x)

combining them,

(x,y) -> (2x,2y) -> (2x,2y+5) -> (-(2y+5),2x)

so,

(1,4) -> (-13,2)

and so on for the other points

**Related Questions**

Algebra - I need help with two math problems. 1. A triangle has vertices (1, 4...

Matrices - A triangle has vertices (1, 4), (1, 1), and (−3, 1). The ...

math - A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). ...

math - A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). ...

MATH - A triangle with the vertices A(–3, 4), B(3, 1), and C(–1, –5) is dilated ...

math - Triangle XYZ has vertices X(-5,3), and Z(7,-6). Find the coordinates of ...

geometry - I realy need help please!!!! 1-Describe the translation in words: (x...

math - Triangle XYZ has vertices X(-5,3), and Z(7,-6). Find the coordinates of ...

Math - Triangle L'M'N' is a dilation of triangle LMN. If the scale factor of the...

Algebra 8th grade please help!!!!!! - A right triangle has an area of 13 m2. The...