Are this functions yes or no how can I tell if it is ?

yes they are all functions

Step-by-step explanation:

Despite f(x) being the classic way to write a function,

a function has:

A function relates each element of a set with exactly one element of another (possibly the same) set.  

One-to-one and many-to-one are functions, but one-to-many is not a function.

You can also carry out the Vertical Line Test on a graph.  If the vertical line only crosses the curve once, it is a function.  If it crosses more than once it is still a valid curve, but is not a function.

mental cunning

explanation:

he is often referred to as a man of twists and turns

given hc ∥ gd.¯¯¯¯¯¯which statement is true

step-by-step explanation:

∠cbe and ∠deb are same-side interior angles