Point-slope form of a line is one method to write the equation of a line. Start with the slope equation, which is basically the difference between two points, and then rearrange the terms to obtain the point-slope form of a line. The point-slope form of a line provides a formula that is useful in finding the slope of a line from an equation and a point the line passes through.
Sample Problems (2)
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Give the equation of a line with slope ½ that passes through (3,-2).
Give the equation of a line that passes through (3,1) and (-6,13).