A linear equation is the equation of a line. When you graph a linear equation, it’s best to write the equation in slope-intercept form: y=mx+b. Remember that m is the slope of the line and b is the y-intercept (the y-coordinate of the point at which the line crosses the y-axis).
Read MoreTo find the equation of a line in slope-intercept form, we’ll need at least two pieces of information about the line, which can be a point on the line, a second point on the line, the slope of the line, or the y-intercept of the line (the y-coordinate of the point at which the graph of the line crosses the y-axis). If we know any two of these things, we can find the equation of the line.
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