What are the coordinates of the point on the directed line segment from (3, -1) to (9,8) that partitions the segment into a ratio of 1 to 2?

Analyze the solution below. 7 3 x = −2 7 3 x(3 7 ) = −2(3 7 ) x = − 6 7 what property was used to solve the equation? property of opposites division property of equality addition property of equality multiplication property of equality