Please tell me if there congruent and the reason for congruence (SSS, ASA, etc)

Aline passes through 3,7 and 6,9 what equation represents the line

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost

Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions: y < 4x − 8 y is greater than or equal to negative 5 over 2 times x plus 5 part a: describe the graph of the system, including shading and the types of lines graphed. provide a description of the solution area. (6 points) part b: is the point (5, −8) included in the solution area for the system? justify your answer mathematically. (4 points)