Linear function: In a certain change process, there are two variables x and y. If the following relationship is satisfied: y=kx+b (k is the coefficient of the linear term and k≠0, b is any constant,), then we say that y is a linear function of x, where x is the independent variable and y is the dependent variable (also called a function)
[If you are the independent variable, then I am the dependent variable. I will be happy when you are happy, and I will be sad when you are unhappy]
Intention: True love is invincible