Question 90439

    Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form, where possible. 
20. (-1,3) and (4,-2)

     x1,y1 = -1,3    and x2,y2 = 4,-2

  eq'n is given by the formula y2-y1/y-y1 = x2-x1/x-x1
                              
                              -2-3/y-3 = 4-(-1)/x-(-1)

                               -5/y-3 = 5/x+1
                               -5(x+1) = 5(y-3)

                                -1(x+1) = y-3

                                -x-1 -y+3 = 0

                                      -x-y+2 = 0
                                         -y = x-2
                                          y = -x+2  is the required eq'n in the slope  intercept form