The concept of linear function is 1, and the linear function is one of the functions. The general form is y=kx+b(k, b is a constant, k≠0), where x is an independent variable and y is a dependent variable. Especially when b=0, y=kx+b(k is constant, k≠0), and y is called the proportional function of x.
2. The analytical formula of linear function is: f (x) = mx+b.
Where m is the slope and cannot be 0; X stands for independent variable and b stands for y-axis intercept. M and b are both constants. Firstly, the resolution function is set, and then the unknown slope in the analytical formula is determined according to the conditions, thus the analytical formula is obtained. This analytical formula is similar to the oblique section formula in linear equations.
Image of linear function The image of linear function y = kx+b (k ≠ 0) is a straight line. Since two points determine a straight line, you can draw an image of a function only by tracing two points on the image. Usually, you can find the intersection point with the X axis and the intersection point with the Y axis, and make a straight line through these two points. We usually call this straight line "straight line y = kx+b".
The word "function" was first adopted by the German mathematician Leibniz in17th century. At that time, Leibniz used the word "function" to represent the power of variable X, that is, x2, x3, ... Then Leibniz used the word "function" to represent the abscissa, ordinate, tangent length, vertical length and so on on on the curve.
The above content is a function-related content I found for you, and I hope it will help you.