Write a linear equation in point-slope form for the line that goes through (1, -1) and (-1, 5).
a. y - (-1) = -6/-2(x - 1)
b. y - 5 = 6/-2(x + 1)
c. y + 1 = -6/-2(x - 1)
d. y - (-1) = 6/-2(x + 1)