Answer the question.When using the substitution or elimination method to solve a system of two equations, you end up with an equation stating 
What does this indicate to you about the system of equations?
What will be an ideal response?
Answers may vary. One possibility: The system has dependent equations. In other words, every solution of one equation is also a solution of the other, so the solution set is an infinite set of ordered pairs. We write the solution of a system of dependent equations as an ordered pair by expressing x in terms of y.
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Find all the numbers for which the rational expression is defined.
A. x ? 2 and x ? -5 B. x ? 9 and x ? -9 C. x ? -2 and x ? 5 D. x ? 0
Provide an appropriate response.Add the rational expressions and reduce to simplest terms: 
+ 
A. 
B. 
C. 
D. 
Find the distance between two points given their coordinates.Find the distance between points R and S on a number line, with coordinates -4 and -7, respectively.
A. d(R, S) = 11 B. d(R, S) = -11 C. d(R, S) = 3 D. d(R, S) = -3
Solve the polynomial inequality. Express the solution in interval notation.(x - 2)(x + 3) > 0
A. (-3, 2) B. (-3, ?) C. (-?, -3) ? (2, ?) D. (-?, -2) ? (3, ?)