Q:
# What Is an Undefined Slope?

An undefined slope results from a vertical line, which has multiple x coordinates but no y coordinates. To solve for the slope of a line, it is necessary to select two points and divide the difference in y coordinates from the difference in x coordinates.

Continue ReadingIn a vertical line, the slope calculation results in a number divided by zero, because by definition, a vertical line has the same x values for every point on the line. Any number divided by zero is by necessity undefined, as there are an infinite number of solutions to the equation.

The slope of a line is also called its rise over its run. When graphed, the rise is the amount that the line goes up or down, and the run is how far right or left the line goes. The calculation for slope is the rise of the line divided by the run of the line. A line with a positive slope goes from lower left to upper right. A line with a negative slope goes from upper left to lower right on a graph. A horizontal line has no slope as there is no rise to it over the length of its run.

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Q:
## Why Is the Variable "m" Used for Slope?

A: No one is sure why the letter "m" is used to represent slope in the equation of a line. While there are many theories, the variable may simply have been ar... Full Answer >Filed Under: -
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## What Is the Slope Intercept Form?

A: The slope intercept form for a line is expressed as y = mx + b. In that equation, y is the value of the y-coordinate, x is the value of the x-coordinate, m... Full Answer >Filed Under: -
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## How Do You Find the Point-Slope Form of an Equation?

A: To find the equation of a line given the slope and a single point, you need to use the point-slope form of y - y1 = m(x - x1). It is almost identical to th... Full Answer >Filed Under: -
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## How Do You Solve an Equation Using Slope-Intercept Form?

A: The slope-intercept form of the equation of a line is y = mx + b, where m is the slope of the line and b is the y intercept. To solve for y, multiply the x... Full Answer >Filed Under: