Solve the system of equations using substitution.
A. x = -5, y = -1; x = 8, y = 
or (-5, -1), 
B. x = 5, y = 1; x = -8, y = - 
or (5, 1), 
C. x = -5, y = -1; x = 
, y = 8
or (-5, -1), 
D. x = 5, y = 1; x = - 
, y = -8
or (5, 1), 
Answer: B
Mathematics
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Provide an appropriate response.
and 
__________.
A. coincide B. intersect C. are perpendicular D. are parallel
Mathematics
Multiply, and then simplify if possible. Assume all variables represent positive real numbers.(
+ -3)(
+ 3
+ 9)
A. 
+ 6
- 9
+ 3
- 27
B. 3
+ 7
- 9
- 27
C. 3
+ 
+ 6
- 9
- 27
D. 6
- 9
+ 3
+ 
- 27
Mathematics
The function f is one-to-one. Find its inverse.f(x) = 6x + 8
A. f-1(x) = - 
B. f(x) = 
C. f-1(x) = 
D. f-1(x) = 
Mathematics
Indicate whether the statement is true or false.A system of linear inequalities can have solutions in exactly three of the quadrants.
A. True B. False
Mathematics