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A horizontal line is a straight, flat line that goes from left to right. Given a function f : R → R {\displaystyle f\colon \mathbb {R} \to \mathbb {R} } (i.e. from the real numbers to the real numbers), we can decide if it is injective by looking at horizontal lines that intersect the function's graph .
The word line may also refer, in everyday life, to a line segment, which is a part of a line delimited by two points (its endpoints). Euclid's Elements defines a straight line as a "breadthless length" that "lies evenly with respect to the points on itself", and introduced several postulates as basic unprovable properties on which the rest of ...
Box-drawing characters, also known as line-drawing characters, are a form of semigraphics widely used in text user interfaces to draw various geometric frames and boxes. These characters are characterized by being designed to be connected horizontally and/or vertically with adjacent characters, which requires proper alignment.
Horizontal and vertical lines. In the general equation of a line, ax + by + c = 0, a and b cannot both be zero unless c is also zero, in which case the equation does not define a line. If a = 0 and b ≠ 0, the line is horizontal and has equation y = -c/b.
When the issue is purely display formatting, people who care about the distinction between the different flavors of short horizontal lines should feel free to argue about it and generate WP:MOS pages about the topic, so long as they only involve other people who also care about the different flavors of short horizontal lines.
Tenuto is notated three ways: . The word tenuto written above the passage to be played tenuto.; The abbreviation ten. written above the note or passage to be played tenuto.; A horizontal line, roughly the length of a notehead, placed immediately above or below the note to be played tenuto.
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Its graph, when there is only one variable, is a horizontal line. In this context, a function that is also a linear map (the other meaning) may be referred to as a homogeneous linear function or a linear form. In the context of linear algebra, the polynomial functions of degree 0 or 1 are the scalar-valued affine maps.