Medals. Please answer.

Triangle LMN has vertices L (-10, 2), M (-4, 11), and N (6, -6). Find the vertices of the image of △ LMN after a dilation with scale factor 5/2?

Question

Medals. Please answer.

Triangle LMN has vertices L (-10, 2), M (-4, 11), and N (6, -6). Find the vertices of the image of △ LMN after a dilation with scale factor 5/2?

anonymous · Answer

You should multiply the coordinates of each vertex by the factor.
So the scaled image would have L(-25, 5), M(-10, 25/2), N(15, -15)

anonymous · Answer

Isn't that the answer? @cogs

anonymous · Answer

um, what? :)

anonymous · Answer

"So the scaled image would have L(-25, 5), M(-10, 25/2), N(15, -15)"

Is that the answer? @cogs

anonymous · Answer

Oh yeah, should've written the new vertices as L', M', N' to avoid confusion.

anonymous · Answer

Yep, I'm sure. :)

anonymous · Answer

Which one is the answer? L(-25, 5), M(-10, 25/2), N(15, -15) | OR | L', M', N'

anonymous · Answer

It's a good idea to write the vertices of the image after you perform the dilation as L', M', N', so the image would be △L'M'N'. If you want to plot both triangles, the original, and the transformed one, you may have points like L(-10, 2) and L(-25, 5) which would be confusing. Therefore, you should express different points with different letters/symbols.