What is the average rate of change in f(x) over the interval [4,13]? What is the average rate of change in f(x) over the interval [4,13]?

On a coordinate plane, a function has four points that are connected by lines. The points are (0, 0), (4, 8), (10, 5), and (13, 12).
One-third
Four-thirteenths
Eleven-thirteenths
Eleven-eighths
Mark this and return

Each of the walls of a room with square dimensions has been built with two pieces of sheetrock, a smaller one and a larger one. the length of all the smaller ones is the same and is stored in the variable small. similarly, the length of all the larger ones is the same and is stored in the variable large. write a single expression whose value is the total area of this room. do not use any method invocations.

Maurice has 54 fewer comic books than rebecca.they have 130 comic books together .how many comic books are in maurices collection ? how many comic books are in rebeccas collection

Can someone tell me if this is perpendicular? !