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 »

Find the equation for the tangent line to a curve by finding the derivative of the equation for the curve, then using that equation to find the slope of the tangent line at a given point. Finding the equation for the tan... More »

A secant line makes an intersection on a curve at two or more points, according to Khan Academy. More »

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 »

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 »

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 »

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, or the rate at which it climbs or falls. Use the slope to find ... More »