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why it's called that
A '''linear function''' is a degree 1 [[polynomial]]; every degree 1 polynomial is a linear function. Linear functions can be written in the form <math>f(x) = mx + b</math>, where x is a variable and m and b are [[real number]]s.
A '''linear function''' is a degree 1 [[polynomial]]; every degree 1 polynomial is a linear function. Linear functions can be written in the form <math>f(x) = mx + b</math>, where x is a variable and m and b are [[real number]]s. When plotted on the Cartesian [[coordinate plane]], a linear function forms a straight [[line]], hence its name.
[[category: Linear algebra]]
[[category: Linear algebra]]