Determine the midpoint of the segment connecting (a,b)(a, b)(a,b) and (3a,5b)(3a, 5b)(3a,5b).
(2a,3b)(2a, 3b)(2a,3b)
(a,b)(a, b)(a,b)
(4a,6b)(4a, 6b)(4a,6b)
(1.5a,2.5b)(1.5a, 2.5b)(1.5a,2.5b)