Write the equation of the line with the given slope and y-intercept.slope - 
;y-intercept (0, 9)
A. y = 
x + 9
B. y = - 
x - 9
C. y = 
x - 9
D. y = - 
x + 9
Answer: D
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Solve.
= -9
A. 85 B. 81 C. 77 D. empty set
Find the vertex, focus, and directrix of the parabola with the given equation.(x - 1)2 = 20(y + 4)
A. vertex: (1, -4) focus: (1, 1) directrix: y = -9 B. vertex: (-4, 1) focus: (-4, 6) directrix: y = -4 C. vertex: (-1, 4) focus: (-1, 9) directrix: y = -1 D. vertex: (1, -4) focus: (1, -9) directrix: x = 1
Determine whether the following is a trinomial square.x2 + 16x + 64
A. No B. Yes
Use the simplex method to solve the linear programming problem.Minimizew = 4y1 + 2y2subject to:3y1 + 2y2 ? 60 4y1 + y2 ? 40 y1 ? 0, y2 ? 0
A. 48 when y1 = 24 and y2 = 1 B. 80 when y1 = 2 and y2 = 8 C. 66 when y1 = 0 and y2 = 0 D. 64 when y1 = 4 and y2 = 24