Write an equation for the ellipse.foci at (±9, 0); x-intercepts (±15, 0)
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Answer: B
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Determine whether the lines through each pair of points are parallel, perpendicular, or neither.(-9, 9) and (7, 21); (-5, 7) and (1, 15)
A. parallel B. perpendicular C. neither
Provide the proper response.In the ellipse 
+ 
= 1, what is the equation of the horizontal axis of symmetry? The vertical axis of symmetry?
A. Horizontal: y = 8; Vertical: x = -5 B. Horizontal: y = 5; Vertical: x = 8 C. Horizontal: y = -5; Vertical: x = 8 D. Horizontal: y = 5; Vertical: x = -8
Use transformations of the graph of y = x4 or y = x5 to graph the function.f(x) = (x - 2)5 
A. 
B. 
C. 
D. 
Indicate whether the statement is true always, sometimes, or never.The product of two imaginary numbers is a real number.
A. Always B. Sometimes C. Never