Hurry help meh pls real fast no links or files help pls

The tiles below are pieces of a normal ecg tracing representing a little less than two heartbeats at a resting rate of 80 bpm. arrange the tiles in their correct order. rank from first to last. do not overlap any tiles.

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

Which graph represents the equation y =4x