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Horizontal Line | Define Horizontal Line at Dictionary.com
dictionary.reference.com/browse/Horizontal Line
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en.wikipedia.org/wiki/Horizontal_line_test

In mathematics, the horizontal line test is a test used to determine whether a function is injective ... (because they lie on the line y = c {\displaystyle y=c} y=c ) but different x values, which by definition means the function cannot be injective.

www.mathopenref.com/horizontal.html

In geometry, a horizontal line is one which runs from left to right across the page. It comes from the word 'horizon', in the sense that horizontal lines are parallel to ...

www.mathopenref.com/coordhorizontal.html

Definiton and equation for a horizontal line in coordinate geometry.

virtualnerd.com/algebra-1/linear-equation-analysis/intercept/horizontal-vertical-lines/horizontal-line-definition

It's a horizontal line! And just like the horizon, horizontal lines go straight left and right. ... definition; horizontal; graph; graphical; equation; horizontal; flat ...

www.moomoomath.com/Horizontal-Vertical-Lines.html

What are the properties of a horizontal line, and a vertical line. Complete information about a horizontal line and a vertical line.

www.mathsisfun.com/definitions/horizontal.html

Definition of. Horizontal. Horizontal. Going side-to-side, like the horizon. Parallel to the horizon. (Up-down is called vertical). See: Vertical ...

study.com/academy/lesson/what-are-horizontal-lines-definition-equations-quiz.html

In this lesson, we will learn about horizontal lines. What properties are unique to horizontal lines? How do you recognize the graph or equation...

www.investopedia.com/terms/h/horizontal-line.asp

DEFINITION of 'Horizontal Line'. In finance and economics, a horizontal line is usually the X axis in a data plot. It is a line that appears to proceed from left to right ...

www.dictionary.com/browse/horizontal

Horizontal definition, at right angles to the vertical; parallel to level ground. ... He might want to emphasize a long, low room by horizontal lines, or to accentuate a  ...