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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.


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)


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.


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.