Graph the quadratic equation. Identify the vertex and axis of symmetry.y = -x2 - 1
A. vertex (0,1)
axis of symmetry: x = 0
B. vertex (-1, 0)
axis of symmetry: x = -1
C. vertex (1, 0)
axis of symmetry: x = 1
D. vertex (0,-1)
axis of symmetry: x = 0
Answer: D
Mathematics
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Find the area of the shaded region. y = sec2 x
A. 
B. 2 - 
C. 1 - 
D. 1 + 
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Solve the system by substitution.
A. (2, -2) B. (3, 0) C. (0, -8) D. (0, 0)
Mathematics
Solve the compound inequality. Express the solution using interval notation. Graph the solution set.-4x < -20 and x + 4 > 5
A. (1, 5)
B. (-?, 1) ? (5, ?)
C. (5, ?)
D. ?
Mathematics
Solve the system of equations. x - y + 2z = 72x + z = 3 x + 3y + z = 0
A. {(0, -1, 3)} B. {(3, 0, -1)} C. ? D. {(3, -1, 0)}
Mathematics