Annie is creating a stencil for her artwork using a coordinate plane. The beginning of the left edge of the stencil falls at (−1, 2). She wants to align an important detail on the left edge of her stencil at (2, 1). She knows this is 1:2 of the way to where she wants the end of the stencil. Where is the end of the stencil located? (0, 5)
(8, −1)
(0.5, 1.5)
(1, 1.7)
If you don't mind explaining how you got your answer, or proof that you got the answer correct on the test that would be greatly appreciated. :)