Select the correct graph of the parabola represented by the equation
a. 
b. 
c. 
d. 
b.
Mathematics
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Simplify. Write your answers in the form of a+bi, where a and b are real numbers.
A. - 
+ 
i
B. 
i
C. - 
D. - 
- 
i
Mathematics
Find the equation of the parabola described.Focus at (0, 18); directrix the line y = -18
A. x2 = -72y B. x2 = 72y C. y2 = 72x D. y2 = 18x
Mathematics
Write a numerical expression for the phrase and simplify it.18 less than -6
A. 18 - (-6); 24 B. -6 - 18; -24 C. 18 - 6; 12 D. -6 - 18; 24
Mathematics
Determine the vertex, focus, and directrix of the parabola and sketch its graph.(x + 3)2 = -4(y + 3)
A. vertex: (-3, -3)
focus: (-4, -3)
directrix: x = -2
B. vertex: (-3, -3)
focus: (-3, -4)
directrix: y = -2
C. vertex: (3, 3)
focus: (2, 3)
directrix: x = 4
D. vertex: (3, 3)
focus: (3, 2)
directrix: y = 4
Mathematics