Find the values of a and b so that the solution of the linear system is (−9, 1). ax+by=−31, ax−by=−41. show work

Me find the value of x each figure.

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)

Prove that 16^4-2^13-4^5 is divisible by 11.