Determine the vertex of the graph of the parabola.y = x2 + 4x
A. (- 2, 4)
B. (2, - 4)
C. (- 2, - 4)
D. (2, 4)
Answer: C
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Find the absolute maxima and minima of the function on the given domain.
on the trapezoidal region with vertices 
and 
A. Absolute maximum: 18 at 
absolute minimum: 9 at 
B. Absolute maximum: 12 at 
absolute minimum: 0 at 
C. Absolute maximum: 15 at 
absolute minimum: 9 at 
D. Absolute maximum: 15 at 
absolute minimum: 0 at 
Find the vertices and foci of the hyperbola.
- 
= 1
A. Vertices: (-2, 10), (-2, -20); Foci: (-2, -20), (-2, 10) B. Vertices: (15, -2), (-25, -2); Foci: (20, -2), (-30, -2) C. Vertices: (10, -2), (-20, -2); Foci: (-20, -2), (10, -2) D. Vertices: (-2, 15), (-2, -25); Foci: (-2, 20), (-2, -30)
Use the quadratic formula to solve the equation. (All solutions are real numbers.)
= 
+ 
A. 
B. {-1}
C. 
D. 
Provide an appropriate response.For a certain system of two linear equations, the solution set is {-4, 8}, and 
Find the values of Dx and Dy.
A. Dx = -4; Dy = 8
B. Dx = 240; Dy = -120
C. Dx = -120; Dy = 240
D. Dx = - 
; Dy = 