In the special case of two related variables (e.g., 2x - 7y + 5 = 0), the graph is a straight line.
Chat with our AI personalities
They are not. A vertical line is not a function so all linear equations are not functions. And all functions are not linear equations.
Linear equations are a small minority of functions.
Most functions are not like linear equations.
There are linear functions and there are quadratic functions but I am not aware of a linear quadratic function. It probably comes from the people who worked on the circular square.
y = 0 and y = 1 are two linear functions. They're not especially interesting ones.