11. Given f(x) = -2/5x +4, which statement is true of the inverse function f-¹(x)?

1) f-¹(x) is a line with slope 5/2
2) f-¹(x) is a line with slope 2/5
3) f-¹(x) passes through the point (6,-5)
4) f¹(x) has a y-intercept at (0,-4).