The property of space which indicates mutually perpendicular direction

Three-Dimensional

Step-by-step explanation:

The property is known as Dimensions

In physics and mathematics, the dimension of a mathematical space or object is informally defined as the minimum number of coordinates needed to specify any point within that space. Mostly we use two dimensional space or three dimensional space. A flat plane or shape is two-dimensional has two dimensions known are length and width. In three dimensions we take length and width and height.

the mean and mad

step-by-step explanation:

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50