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August 28, 2015

Homework Help: Algebra

Posted by Kelly on Sunday, May 19, 2013 at 12:10am.

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. What are the vertices of the image of the triangle?

2. Use matrices to solve the system.
2x+3y=4
5x+8y=11

I appreciate the help!

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