Real life relationships represent a function

Choose the correct slope of the line that passes through the points (1, -3) and (3, -5)

3.4a=57.8 what is the the value of a

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90