Determine whether the pair of lines is parallel, perpendicular, or neither.y = -3x - 1 and y = -3x + 2
A. perpendicular
B. parallel
C. neither
Answer: B
Mathematics
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Find the derivative.y = (csc x + cot x)(csc x - cot x)
A. y ' = 1 B. y ' = - csc x cot x C. y ' = 0 D. y ' = - csc2 x
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Sketch the surface z = f(x,y).f(x, y) = 2 -x2 - y2
A. 
B. 
C. 
D. 
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Write the rational expression as an equivalent expression with the indicated denominator.
= 
A. 
B. 
C. 
D. 
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Find the exact value of the expression, if possible. Do not use a calculator.tan (tan-1 (-6.3))
A. -3.2 B. -6.3 C. 9.4 D. 6.3
Mathematics