After a rotation of 180° about the origin, the coordinates of the vertices of the image of a triangle are A'(6,3), B'(-2, 1), and C'(1,7). What is the x-coordinate of the pre-image for vertex
A?
17 Points

Which statement explains how you could use coordinate geometry to prove that quadrilateral abcd is a parallelogram? -5 -4 -3 -2 -1 t 1 2 3 4 prove that all sides are congruent and have slopes that are opposite reciprocals prove that segments ad and ab are congruent and parallel prove that opposite sides are congruent and have equal slopes prove that segments bc and cd are congruent and parallel

Gabrielle's age is two times mikhail's age. the sum of their ages is 84. what is mikhail's age?

Eden has a part time job. she is paid ? 7.20 an hour the week she worked 18 and a half hours how much is she paid