Decide whether the equation defines y as a function of x.y2 = (x - 9)(x + 7)
A. function
B. not a function
Answer: B
Mathematics
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Solve by the method of elimination by substitution.3x + 2y = 93x + 2y = 5
A. x = 3, y = 2 B. x = 1, y = 1 C. Dependent D. Inconsistent
Mathematics
Simplify.5(6x + 4y) + 8(x + 3y)
A. 70x + 44y B. 14x + 7y + 5 C. 38x + 7y D. 38x + 44y
Mathematics
Using the restrictions stated for the function, find a rule for f-1.f(x) = -x2 + 16, x ? 0
A. f-1(x) = - 
B. f-1(x) = x2 + 16
C. f-1(x) = 
D. f-1(x) = 
Mathematics
Find the derivative of the function 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics