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January 26, 2015

January 26, 2015

Posted by **rita** on Friday, May 23, 2008 at 9:57am.

Triangle DEF undergoes an enlargement with the centre ,O, and scale factors k.Its image is D`E`F` where D(5,12)arrow D`(7.5,18)

a)How do i detremine the value of k

- math (need help badly) -
**drwls**, Friday, May 23, 2008 at 8:12pmIt looks to me like the new triangle is 1.5 times larger. All primed coordinates are 1.5 times the original. The center of the expansion is the origin (O).

The answer is k=1.5

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