Determine whether the following rule defines y as a function of x.y = 
A. Function
B. Not a function
Answer: A
Mathematics
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Find fx, fy, and fz.f(x, y, z) = xz
A. fx = z
; fy = 
; fz = x
B. fx = z
; fy = - 
; fz = x
C. fx = z
; fy = - 
; fz = x
D. fx = z
; fy = 
; fz = x
Mathematics
Solve the logarithmic equation.log(4x) = log 5 + log(x - 3)
A. 
B. 
C. {- 15}
D. {15}
Mathematics
Provide an appropriate response.What is the difference of 72 and 8?
A. 64 B. 74 C. 63 D. 65
Mathematics
Find the vertex, the focus, and the directrix of the parabola.y2 + 4x - 8y + 8 = 0
A. V: (2, 4); F: (1, 4); D: x = 3
B. V: 
; F: 
; D: y = 
C. V: (0, 2); F: (-2, 2); D: y = -6
D. V: 
; F: (3, 2); D: y = 1
Mathematics