The relationship is as follows:
1, k>0, b>0, passing through the 1, 2, and 3 quadrants.
2, k>0, b
3, k
4, k0, passing through quadrants 1, 2, and 4.
A linear function is a type of function, generally in the form of y=kx+b (k, b are constants, k≠0), where x is the independent variable and y is the dependent variable. In particular, when b=0, y=kx (k is a constant, k≠0), and y is called a proportional function of x.
Linear functions and their graphs are an important content of junior high school algebra, the cornerstone of high school analytic geometry, and a key test content in the high school entrance examination.
There are three ways to represent a linear function, as follows:
1. Analytical expression method:
The method of expressing a function using an expression containing the independent variable x is called the analytic expression method.
2. List method:
The method of listing the function values y corresponding to a series of x values into a table to express the functional relationship is called the list method.
3. Image method:
The method of using images to represent functional relationships is called the image method.
Functional properties of linear functions.
1. The change value of y is directly proportional to the corresponding change value of x, and the ratio is k.
That is: y=kx+b (k≠0) (k is not equal to 0, and k and b are constants).
2. When x=0, b is the intersection point of the function on the y-axis, and the coordinates are (0, b).
When y=0, the intersection coordinate of the function graph on the x-axis is (-b/k, 0).
3. k is the slope of the linear function y=kx+b, k=tanθ (the angle θ is the angle between the graph of the linear function and the positive direction of the x-axis, θ≠90°).
The above is the detailed content of Which exchanges are bkx coins listed on (currency exchanges). For more information, please follow other related articles on the PHP Chinese website!