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 the slope-intercept form, but you have to find the point for the y-... More »

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. More » Math Algebra

Finding the slope of a line from an equation is simple. If the equation is already in slope intercept form, then the m variable is the slope. If it isn't in slope intercept form, rearrange the equation to solve for m, an... More » Math Algebra

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 value by the slope, then add the y-intercept. To solve for x, su... More » Math Algebra

Find the slope of the line (m), and the place where the line crosses the y-axis, known as the y-intercept (b), to write the equation in slope-intercept form, y = mx + b. Use the equation to find the y value for any x on ... More »

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 illustrating the slope of the equation. Such programs are widely used by t... More » Math Algebra

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 arbitrarily chosen and used as a standard convention. More » Math Algebra