What is the best answer for the equation -15=-6r+r

Acircle has a diameter will endpoints of (-2,8) and (6, 4). what is the center of the circle

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

Apolynomial has two terms. check all of the factoring methods that should be considered. common factor difference of cubes sum of cubes difference of squares perfect-square trinomial factoring by grouping