Help please I really need it

What is the rate of change of a line that passes through (2,-5) and (6,-2)?

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)

Which of the following expressions cannot be simplified to x – 2?