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In the special case of two related variables (e.g., 2x - 7y + 5 = 0), the graph is a straight line.

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Q: Why are first-degree functions called linear functions?
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Related questions

Are linear equations and functions different?

All linear equations are functions but not all functions are linear equations.


How are linear equations and functions alike?

They are not. A vertical line is not a function so all linear equations are not functions. And all functions are not linear equations.


Are all linear equations functions Is there an instance when a linear equation is not a function?

Linear equations are always functions.


How are functions and linear equations similar?

Linear equations are a small minority of functions.


How are functions like linear equations?

Most functions are not like linear equations.


How are linear equations and functions alike and how are they different?

A linear equation is a special type of function. The majority of functions are not linear.


When can you use linear quadratic functions?

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.


What is linear algebra?

"Linear algebra is a branch of mathematics that studies vector spaces, also called linear spaces, along with linear functions that input one vector and output another." (from Wikipedia)


How do you graph linear functions?

A linear function is called "linear" because it represents a straight line. To graph a linear function, find two points that satisify that function, plot them, and then draw a straight line between them.


What similarities and differences do you see between the function and linear equations?

Linear equations are a tiny subset of functions. Linear equations are simple, continuous functions.


What are non linear functions?

Functions that do not result in a line when graphed.


What are two linear functions?

y = 0 and y = 1 are two linear functions. They're not especially interesting ones.