Determine the amplitude or period as requested.Amplitude of y = 
cos 4x
A. 6?
B. 
C. 4
D. 
Answer: B
Mathematics
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Evaluate the integral.
A. - 
B. - 
C. 
D. 
Mathematics
Graph the system of inequalities.-x + 2y ? -63x + 2y > -18
A. 
B. 
C. 
D. 
Mathematics
Find the direction the parabola opens, the coordinates of the vertex, the equation of the axis of symmetry and draw the graph.x = -3(y - 3)2 - 3 
A. 
opens left; vertex (-3, 3);
axis of symmetry y = 3
B. 
opens left; vertex (3, 3);
axis of symmetry y = 3
C. 
opens right; vertex (3, 3);
axis of symmetry y = 3
D. 
opens right; vertex (-3, 3);
axis of symmetry y = 3
Mathematics
Find an equation of the line containing the given pair of points(7, -7) and (-4, 4)
A. y = -x - 7
B. y = - 
x
C. y = -x
D. y = x
Mathematics