Find the slopes of the lines PQ and PR, and determine whether the points P, Q, and R lie on the same line.
?
P (4, 15) ; Q (-3, -20) ; R (10, 45)
?
A. not on the same line
B. on the same line
Answer: B
Mathematics
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A. - 
j + 
k
B. - 
j + 
k
C. 
i - 
j + 
k
D. 
i - 
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- (9 - 8)2 following the order of operations using a calculator.
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