Q:
# What Is the Point-Slope Form of an Equation?

**In algebra, the point-slope form of an equation for a line is written as y - y1 = m(x - x1).** The variables y1 and x1 equal the values of the given point, and m equals the slope.

The slope is calculated by using two points on the line to find the change in y over the change in x. The slope is also based on the expression rise over run where the vertical change is divided by the horizontal change. The equation is called slope-intercept form because it is calculated with the value of the slope and value of a single point on the line, which can be used to find the y-intercept.

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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: -
Q:
## What Is a Slope Grapher?

A: A slope grapher is a computer program that plots several points of a given equation, and then connects all of the points with a single line, thus illustrat... Full Answer >Filed Under: -
Q:
## How Do You Find the Equation of a Line?

A: To find a line's equation, identify two of the points through which the line passes, and then use the "x" and "y" coordinates to find the slope of the line... Full Answer >Filed Under: -
Q:
## What Does Linear Mean in Mathematics?

A: In mathematics, linear refers to an equation or function that is the equation of a straight line and takes the form y = mx + b, where "m" is equal to the s... Full Answer >Filed Under: