Solve the system by the addition method.y2 + 3x2 = 17y2 - x2 = 1
A. (3, 
), (3, -
), (-3, 
), (-3, -
)
B. (3, 
), (3, -
)
C. (2, 
), (2, -
)
D. (2, 
), (2, -
), (-2, 
), (-2, -
)
Answer: D
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Determine the vertex, focus, and directrix of the parabola and sketch its graph.x2 = 5y
A. vertex: (0, 0)
focus: 
directrix: y = - 
B. vertex: (0, 0)
focus: 
directrix: x = 
C. vertex: (0, 0)
focus: 
directrix: y = 3
D. vertex: (0, 0)
focus: 
directrix: y = - 3
Use properties of logarithms to condense the logarithmic expression. Write the expression as a single logarithm whose coefficient is 1. Where possible, evaluate logarithmic expressions.
[3 ln (x + 6) - ln x - ln(x2 - 4)]
A. ln 
B. ln 
C. ln 
D. ln 
Determine if the complete graph represents a function that is even, odd, or neither.
A. even B. neither C. odd
Solve for the indicated letter.Solve S = x2 + y2 - 8x + 10y - 4 for x.
A. x = 4 ± 
B. x = 4 ± 
C. x = 4 ± 
D. x = 4 ± 