If x2 + ax + b = (x – 9)(x + 9), what is the value of ab?
A) -81
B)
0
C)
81
D) 1458

System of two linear inequalities is graphed as shown, where the solution region is shaded. complete the sentences below by determining whether each point is, or is not, located in the solution region. the point (-3,2) located in the solution region. the point (-7,5) located in the solution region. the point (2,-5) located in the solution region. the point (-14,6) located in the solution region.