?Use any method to solve the system of linear equations, find (x,y).
?
?
?
A. ?(3, 4)
B. ?(4, -3)
C. ??(-3, -4)
D. ??(-3, 4)
E. ??(4, -3)
Answer: D
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Solve for the requested variable without determining the constant of variation, k. Use the fact that if 
and 
then 
so that 
Assuming that y varies directly as the cube of x, and y = 25 when x = 5, find y when x = 3.
A. y = 
B. y = 15
C. y = 
D. y = 
Identify the element specified for the matrix.
a12
A. -5 B. -9 C. -6 D. 3
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