How to solve (112+3/4(252-112),62+3/4(142-62)

Ijust need to see how to do this. so you don’t have to answer all of them just a step by step explanation of one.

The focus of parabola is (-4, -5), and its directrix is y= -1. fill in the missing terms and signs in parabolas equation in standard form

The pyramid below was dissected by a horizontal plane which shape describes the pyramid horizontal cross section