Find the slopes of the lines that are (a) parallel to and (b) perpendicular to the line passing through the pair of points.(3, 3) and (-2, -2)
A. (a) 1; (b) -1
B. (a) -1; (b) 1
C. (a) - 
; (b) 
D. (a) 0; (b) 0
Answer: A
Mathematics
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Solve the equation symbolically.6 ln 4x = 42
A. x = 
e7
B. x = e7/4
C. x = 
ln 7
D. x = 
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Solve the system of linear equations.
x - 
y = -18
x + 
y = -9
A. (12, 0) B. No solutions C. (-12, 0) D. (0, 12)
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Find the domain of the function.f(x) = 
A. {x|x > 
}, or (
, ?)
B. {x|x ? 6}, or (-?, 6]
C. {x|x ? 6}, or (-?, 6) ? (6, ?)
D. all real numbers, or (-?, ?)
Mathematics