How the Right of Occupancy can be transferred or exchanged.

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b

Successful implementation of a new system is based on three independent modules. module 1 works properly with probability 0.96. for modules 2 and 3, these probabilities equal 0.95 and 0.90. compute the probability that at least one of these three modules fails to work properly.

Pranza plotted point a in the coordinate plane below.