# What does a straight up and down line mean in math?

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## What does a straight up and down line mean in math?

The vertical line, also called the vertical slash or upright slash ( | ), is used in mathematical notation in place of the expression “such that” or “it is true that.” This symbol is commonly encountered in statements involving logic and sets. Also see Mathematical Symbols.

## What are the straight lines in math?

A straight line or line is an endless one-dimensional figure that has no width. The straight line is a combination of endless points joined on both sides of a point. A straight line does not have any curve in it. The straight line can be horizontal, vertical, or slanted.

What lines are straight up and down?

A vertical line is one the goes straight up and down. The horizontal line is a straight line that goes from left to right. Parallel lines are lines which are always the same distance apart and never meet.

What do vertical lines in a math equation mean?

Absolute Value
Absolute Value Examples and Equations The most common way to represent the absolute value of a number or expression is to surround it with the absolute value symbol: two vertical straight lines. –|x| means “the negative of the absolute value of x.”

### How do you write an equation for a horizontal line?

Horizontal lines have a slope of 0. Thus, in the slope-intercept equation y = mx + b, m = 0. The equation becomes y = b, where b is the y-coordinate of the y-intercept.

### What are the types of straight lines?

Four Basic Kinds of Straight Lines; 1. Vertical 2. Horizontal 3. Diagonal l. to r.

What are the two vertical lines in math?

The symbol for absolute value is two vertical lines. Since opposites are the same distance from the origin, they have the same absolute value. For example, the absolute value of “negative 10” is ten, and the absolute value of “positive 10” is also 10.

What is the slope of a straight up and down line called?

so a “straight up and down” (vertical) line’s Slope is “undefined”. Sometimes the horizontal change is called “run”, and the vertical change is called “rise” or “fall”: They are just different words, none of the calculations change.

## When does a vertical line go straight up and down?

A vertical line is one the goes straight up and down, parallelto the y-axis of the coordinate plane. All points on the line will have the same x-coordinate. In the figure above, drag either point and note that the line is vertical when they both have the same x-coordinate.

## Is the slope of a straight up and down line undefined?

Straight Up and Down. That last one is a bit tricky so a “straight up and down” (vertical) line’s Slope is “undefined”. Rise and Run. Sometimes the horizontal change is called “run”, and the vertical change is called “rise” or “fall”:

What do you call the rise and run of a straight line?

Rise and Run. Sometimes the horizontal change is called “run”, and the vertical change is called “rise” or “fall”: They are just different words, none of the calculations change. Equation of a Straight Line Y Intercept of a Straight Line Test Yourself Straight Line Graph Calculator Graph Index.