Which best describes the relationship between the successive terms in the sequence below? –3.2, 4.8, –7.2, 10.8

The number of revolutions of two pulleys is inversely proportional to their diameters. if a 24-inch diameter pulley making 400 revolutions per minute is belted to an 8-inch diameter pulley, find the number of revolutions per minute of the smaller pulley.

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Write the point-slope form of the line passing through (2, -12) and parallel to y=3x.