Algebra(2 of 3)

The vertices of ABC are A(-3,-4),B(-1,3),C(3,-2). The triangle is rotated 90 degrees counterclockwise. Use the rotation matrix [0 -1][1 0] to find the coordinates of C'

A)(-3,2)
B)(4,-3)
C)(-3,-1)
D)(2,3)
I chose A

[0 -1] x [-3 -1 3][-4 3 -2] =

  1. 👍 0
  2. 👎 0
  3. 👁 62
asked by Jon
  1. hard to show matrices on here

    │0-1││ 3│ = │2│
    │1 0││-2│'''│3│

    the process goes as follows: 0x3+(-1)x(-2) = 2 and
    1x3 + 0x(-2)=3

    I don't understand what you tried to do.

    1. 👍 0
    2. 👎 0
    posted by Reiny

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra

    I'm stuck!! Can someone please help me with this problem?? 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

    asked by Melania on May 19, 2013
  2. Algebra

    I need help with two math problems. 1. 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.

    asked by Kelly on May 19, 2013
  3. math

    After a triangle is rotated 180 degrees, its vertices are at (-4,1),(-1,4), and (-5,-8). What were the coordinates of the vertices before the rotation? I think the answer is (1,-4), (4,-1),(8,-5). In rotation, the coordinates get

    asked by robert on December 1, 2007
  4. math

    After a triangle is rotated 180 degrees, its vertices are at (-4,1),(-1,4), and (-5,-8). What were the coordinates of the vertices before the rotation? I think the answer is (1,-4), (4,-1),(8,-5). Is this right?

    asked by robert on December 1, 2007
  5. math

    After a triangle is rotated 180 degrees, its vertices are at (-4,1),(-1,4), and (-5,-8). What were the coordinates of the vertices before the rotation? I think the answer is (1,-4), (4,-1),(8,-5). Is this right?

    asked by robert on December 1, 2007
  6. Trigonometry

    Suppose triangle ABC has vertices at A(1, 0), B(10, 0), and C(2, 6). After a 60° counterclockwise rotation about the origin, vertex B' has coordinates (5, ?).

    asked by Quinn on January 13, 2019
  7. Matrices

    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° counterclockwise about the origin. What are the vertices of the image of the

    asked by Maria on May 7, 2014
  8. Math

    18. Identify a sequence of transformations that maps triangle ABC onto triangle A′′B′′C′′ in the image below. (1 point) clockwise 90° rotation; enlargement counterclockwise 90° rotation; reduction counterclockwise

    asked by Sunny Dreams <3 on March 30, 2017
  9. math

    18. Identify a sequence of transformations that maps triangle ABC onto triangle A′′B′′C′′ in the image below. (1 point) clockwise 90° rotation; enlargement counterclockwise 90° rotation; reduction counterclockwise

    asked by Sunny Dreams <3 on March 30, 2017
  10. algebra

    Point D(-3,5) is a vertex of triangle DEF. After rotation of the triangle about the origin D us located at (3,5). Which of the following was the rotation of the triangle? A. 90* (degrees) clockwise B. 90* Counterclockwise C. 180*

    asked by annonymous on November 1, 2015

More Similar Questions