Point-Slope Form of a Line - Problem 5

If you are given two points, you have enough information to write the equation of the line that contains those two points. From those two points you will first need to find the slope using the slope formula, m = (y2 - y1) / (x2 - x1) . After you have the slope, you can use either original point to write the equation in point-slope form, which looks like y - y1 = m (x - x1) where the m is the slope you just found and (x1, y1) are the coordinates of either of your original points. If you're asked for slope- intercept form, then you will need to continue to simplify until you get y isolated in y = mx + b form.