Graph.y = 
- 2
A. 
B. 
C. 
D. 
Answer: C
Mathematics
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Provide an appropriate response.If a parabola opens downward, the highest point on the graph is called the 
of the parabola.
A. axis B. top C. middle point D. vertex
Mathematics
Evaluate the expression.
3
A. 
B. 3
C. 
D. 
Mathematics
Find the exact value of y, or state that y is undefined.y = cos-1 
A. 
B. 
C. 
D. - 
Mathematics
Find the exact value of the trigonometric expression without the use of a calculator.If sin ? = 
, 
< ? < ? and cos ? = 
, 0 < ? < 
, find the exact value of sin (? - ?).
A. 
B. 
C. 
D. - 
Mathematics