Find two sets of parametric equations for the given rectangular equation.y = 9x + 7
A. x = t, y = 9t + 7; -? < t < ?
x = 
, y = t + 7; -? < t < ?
B. x = 9t, y = t + 7; -? < t < ?
x = 
, y = t + 7; -? < t < ?
C. x = t, y = 9t + 7; -? < t < ?
x = 9t, y = t + 7; -? < t < ?
D. x = t, y = 9t + 7; -? < t < ?
x = t, y = 
+ 7; -? < t < ?
Answer: A
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Solve the problem.The parabola x2 = -12y is shifted down 6 units and right 2 units. Find an equation for the new parabola and find the new vertex.
A. (x - 2) 2 = -12(y + 6); vertex; (2, -6) B. (y + 6) 2 = -12(x - 2); vertex; (-6, 2) C. (x + 6) 2 = -12(y - 2); vertex; (-6, 2) D. (x + 2) 2 = -12(y - 6); vertex; (2, -6)
Solve the nonlinear system.4x2 + 2y2 = 4x2 + 2y2 = 1
A. {(-1, 0), (1, 0)}
B. {(-1, -
), (-1, 
), (1, -
), (1, 
)}
C. {(1, 0)}
D. {(-1i, 0), (1i, 0)}
Find the exact value of the expression or state that it does not exist.cos (cos-1 0.6)
A. 2.5 B. 3.7 C. 0.6 D. 0.8
Solve.4x2 - 5x - 9 = 0
A. 
, -1
B. 
, -1
C. 
, 0
D. 
, 1