126 is decreased to 48 percent of change

If eh = hg and hg=16, find the diameter of k

A, b, c, and d have the coordinates (-8, 1), (-2, 4), (-3, -1), and (-6, 5), respectively. which sentence about the points is true? a. a, b, c, and d lie on the same line. b. and are perpendicular lines. c. and are parallel lines. d. and are intersecting lines but are not perpendicular. e. and are parallel lines.

Apositive number a or the same number a increased by 50% and then decreased by 50% of the result?