Find the value of a so that the trigonometric function passes through the given point.y = a sin x
A. -6
B. -1
C. 
D. 6
Answer: A
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Find the slope of the line passing through the pair of points or state that the slope is undefined.(-2, 6) and (-2, -4)
A. 0
B. - 
C. undefined
D. - 
Find the vertices and the foci of the given ellipse.
+ 
= 1
A. V: (-7, 0), (7, 0);
F:(- 
, 0), (
, 0)
B. V: (0, -16), (0, 16);
F: (0, -4) and (0, 4)
C. V: (-49, 0), (49, 0)
F: (-7, 0) and (7, 0)
D. V: (0, -7), (0, 7);
F: (0, - 
), (0, 
)
Find all the real zeros of 
.
A. ?x = 3, 
B. ?x = 2, 1, -6
C. ?x = ± 1, 3
D. ?x = 3
E. ?x = 
, 
Provide an appropriate response.A student wanted to estimate 21.5 × 0.0079 by first rounding each number. He solved the problem as follows.21.5 × 0.0079 is approximately equal to 20 × 0.008, which is equal to 0.016. So he estimated the answer as 0.016. Do you agree with the answer? If not, explain where the student went wrong and give the correct answer.
What will be an ideal response?