Graph the parabola.x = -4y2
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Graph the function.y = 
sin 
A. 
B. 
C. 
D. 
Mathematics
Write the whole number in standard form.Six hundred thirty-eight thousand, nine hundred ninety-seven
A. 638,977 B. 638,997 C. 638,997,000 D. 638,000
Mathematics
Express in terms of i.
A. ±3
B. -i
C. 3i
D. -3i
Mathematics
Find the vertex, focus, directrix, and focal width of the parabola.- 
x2 = y
A. Vertex: (0, 0); Focus: (0, -10); Directrix: y = 10; Focal width: 40 B. Vertex: (0, 0); Focus: (-20, 0); Directrix: x = 10; Focal width: 160 C. Vertex: (0, 0); Focus: (0, 10); Directrix: y = -10; Focal width: 10 D. Vertex: (0, 0); Focus: (0, -10); Directrix: y = 10; Focal width: 160
Mathematics