The linear rule is the idea that any point in a function falls on the same line, and writing an equation with the linear rule only requires knowledge of the function and y-intercept of the function. If two points on the ... More »

The slope-intercept form of an equation is written as y - y1 = m(x - x1). The variable m indicates the value of the slope, and the values for y1 and x1 equal the coordinates at a given point on the line. 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 »

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 slope, and "b" is equal to the y-intercept. Three features define ... More »

To write the equation of a line, find the slope and the y-intercept, and incorporate them into slope-intercept form. If you do not know the slope and the intercept, you can also use point-slope form, as long as you have ... More »

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 »

The y-intercept is the point in a function where the value of the x-coordinate is zero. By definition, a function has only one y-intercept. The x-intercept is the point in a function where the value of the y-coordinate i... More »