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2. Slope - Wikipedia

   en.wikipedia.org/wiki/Slope

   Slope: = = ⁡ In mathematics, the slope or gradient of a line is a number that describes the direction of the line on a plane. [1] Often denoted by the letter m, slope is calculated as the ratio of the vertical change to the horizontal change ("rise over run") between two distinct points on the line, giving the same number for any choice of points.

3. Vertical line test - Wikipedia

   en.wikipedia.org/wiki/Vertical_line_test

   The vertical line test, shown graphically. The abscissa shows the domain of the (to be tested) function. In mathematics, the vertical line test is a visual way to determine if a curve is a graph of a function or not. A function can only have one output, y, for each unique input, x.

4. Vertical bar - Wikipedia

   en.wikipedia.org/wiki/Vertical_bar

   In chemistry, the vertical line is used in cell notation of electrochemical cells. Example, Zn | Zn 2+ || Cu 2+ | Cu Single vertical lines show components of the cell which do not mix, usually being in different phases. The double vertical line ( || ) is used to represent salt bridge; which is used to allow free moving ions to move.

5. Grade (slope) - Wikipedia

   en.wikipedia.org/wiki/Grade_(slope)

   Gradients are expressed as a ratio of vertical rise to horizontal distance; for example, a 1% gradient (1 in 100) means the track rises 1 vertical unit for every 100 horizontal units. On such a gradient, a locomotive can pull half (or less) of the load that it can pull on level track.

6. Line (geometry) - Wikipedia

   en.wikipedia.org/wiki/Line_(geometry)

   In geometry, a straight line, usually abbreviated line, is an infinitely long object with no width, depth, or curvature, an idealization of such physical objects as a straightedge, a taut string, or a ray of light. Lines are spaces of dimension one, which may be embedded in spaces of dimension two, three, or

7. Distance from a point to a line - Wikipedia

   en.wikipedia.org/.../Distance_from_a_point_to_a_line

   The distance from (x 0, y 0) to this line is measured along a vertical line segment of length |y 0 - (-c/b)| = |by 0 + c| / |b| in accordance with the formula. Similarly, for vertical lines (b = 0) the distance between the same point and the line is |ax 0 + c| / |a|, as measured along a horizontal line segment.

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Vertical tangent - Wikipedia

   en.wikipedia.org/wiki/Vertical_tangent

   Vertical tangent on the function ƒ(x) at x = c. In mathematics , particularly calculus , a vertical tangent is a tangent line that is vertical . Because a vertical line has infinite slope , a function whose graph has a vertical tangent is not differentiable at the point of tangency.