Find the slopes of the lines that are (a) parallel to and (b) perpendicular to the line passing through the pair of points.(-1, -1) and (4, 4)
A. (a) 0; (b) 0
B. (a) -1; (b) 1
C. (a) 1; (b) -1
D. (a) - 
; (b) 4
Answer: C
Mathematics
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