Question dow below thanks

What is the point-slope equation of a line with slope -5 that contains the point (6,3)

Find the cosine function that is represented in the graph.

A3-dimensional figure has a square base and 4 lateral faces that meet at a point. explain the difference between the cross sections when a slice is made perpendicular to the base through the vertex, and when a slice is made perpendicular to the base and not through the vertex