Solve by substitution and check.x - y = -5 x = 2y
A. (-5, 10)
B. (-10, -5)
C. (5, 10)
D. (-5, -10)
Answer: B
Mathematics
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Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places.
and 
A. 
? 0.373
B. 
? 0.656
C. 
? 0.636
D. 
? 7.655
Mathematics
Indicate whether the ordered pair is or is not a solution to the given system.2x + y = -23x + 2y = -6(2, -6)
A. Not a solution B. Solution
Mathematics
Determine where the function is increasing and where it is decreasing.f(x) = -2x2 - 2x - 8
A. decreasing on 
increasing on 
B. increasing on 
decreasing on 
C. increasing on 
decreasing on 
D. increasing on 
decreasing on 
Mathematics
Write the vector in terms of the unit vectors i and j.v = 
A. (6 + i) - 5j B. 6i - 5 C. 6 - 5j D. 6i - 5j
Mathematics