The formula is y-y1 = m(x-x1) First, find the slope using the points (- 2, 3)<span> and </span>(3, - 1)<span> : </span><span>m = 3-(-1)/-2-3 = 4/-5 = -4/5</span> <span>Next, pick a point -- for example, </span>(- 2, 3)<span> . Using this point, x1</span><span> = - 2</span><span> and y1</span><span> = 3</span><span> .</span> <span>Therefore, the equation of this line is </span><span>y - 3 = -4/5 (x - (- 2))</span><span> , which is equivalent to </span><span>y - 3 = - 4/5(x + 2)</span><span> .</span>
