Decide whether the equation defines y as a function of x.y = -x
A. function
B. not a function
Answer: A
Mathematics
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Determine the vertex, focus, and directrix of the parabola and sketch its graph.y2 = 12x
A. vertex: (0, 0)
focus: (-3, 0)
directrix: x = 3
B. vertex: (0, 0)
focus: (0, 3)
directrix: y = -3
C. vertex: (0, 0)
focus: (0, 3)
directrix: y = -3
D. vertex: (0, 0)
focus: (3, 0)
directrix: x = -3
Mathematics
Translate the sentence to an equation using the variable x. Then solve the equation.A number minus 2 equals 4.
A. x - 2 = 4; 6 B. x = 2 - 4; -2 C. 2 - x = 4; -2 D. x = 4 - 2; 2
Mathematics
Graph the function.f(x) = 
+ 1
A. 
B. 
C. 
D. 
Mathematics
For the pair of functions, find the indicated domain.f(x) = x2 - 36, g(x) = 2x + 3Find the domain of g/f.
A. (-?, -6) ? (-6, 6) ? (6, ?)
B. 
? 
C. 
D. (-?, ?)
Mathematics