Need answers to this for slope, y-intercept, and x-intercept

Assume that there is a 11% rate of disk drive failure in a year. a. if all your computer data is stored on a hard disk drive with a copy stored on a second hard disk drive, what is the probability that during a year, you can avoid catastrophe with at least one working drive? b. if copies of all your computer data are stored on four independent hard disk drives, what is the probability that during a year, you can avoid catastrophe with at least one working drive?

Typically a point in a three dimensional cartesian coordinate system is represented by which of the following answers in the picture !

What is 74 round to the nearest ten