What point is on the graph of every direct variation equation. pl answer

How do you use the additive inverse to evaluate an expression that uses subtraction in a full sentence

Simplify the expression 10/11(22z) + (a+5) -1

The graph of a function f(x)=(x+2)(x-4). which describes all of the values for which the graph is negative and increasing? all real values of x where x< -2 all real values of x where -2