When creating an inequality equation from a graph, how do you know when to use "or equal too"?

Aquadratic function f(x) has a turning point at (3,-7). what is the turning point of -f(x)?

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.

Select the two pairs of figures that are similar.