document.write( "Question 1079900: State how each transformation affects the area
\n" ); document.write( "A triangle had vertices A(2,3), B(5,2), C(5,4). The transformation is (x,y) to (x,2y)
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Algebra.Com's Answer #694140 by jim_thompson5910(35256)\"\" \"About 
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A(2,3), B(5,2), C(5,4) are the three given points\r
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\n" ); document.write( "\n" ); document.write( "Double each y coordinate to get these corresponding points: A'(2,6), B'(5,4), C'(5,8)\r
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\n" ); document.write( "\n" ); document.write( "Note: Points B' and C share the same location\r
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\n" ); document.write( "\n" ); document.write( "Plot the set of points on the same grid. We have these two triangles shown below\r
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\n" ); document.write( "Image generated using GeoGebra (free graphing software).\r
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\n" ); document.write( "\n" ); document.write( "The base of each triangle is actually the vertical component. If you want, rotate the image 90 degrees to have the triangles flat on one side. \r
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\n" ); document.write( "\n" ); document.write( "The base of triangle ABC is segment BC, which is 2 units. The height is perpendicular to the base and goes from segment BC to point A. The height of triangle ABC is 3 units. \r
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\n" ); document.write( "\n" ); document.write( "Area of triangle ABC = (1/2)*base*height
\n" ); document.write( "Area of triangle ABC = (1/2)*2*3
\n" ); document.write( "Area of triangle ABC = 0.5*2*3
\n" ); document.write( "Area of triangle ABC = 1*3
\n" ); document.write( "Area of triangle ABC = 3 square units\r
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\n" ); document.write( "\n" ); document.write( "Triangle A'B'C' has the base B'C' which is 4 units (notice how it's double that of BC). The height is the same as the previous triangle. The height is 3 units.\r
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\n" ); document.write( "\n" ); document.write( "Area of triangle A'B'C' = (1/2)*base*height
\n" ); document.write( "Area of triangle A'B'C' = (1/2)*4*3
\n" ); document.write( "Area of triangle A'B'C' = 0.5*4*3
\n" ); document.write( "Area of triangle A'B'C' = 2*3
\n" ); document.write( "Area of triangle A'B'C' = 6 square units\r
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\n" ); document.write( "\n" ); document.write( "Old area = 3 square units
\n" ); document.write( "New area = 6 square units\r
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\n" ); document.write( "\n" ); document.write( "The area has been doubled.
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