Provide an appropriate response.
Which of the following lines are perpendicular? (a) line through points (1, -2) and (7,6)
(b) line with x-intercept -4 and y-intercept 3
(c) line 3x + 4y = 12
A. (b) and (c)
B. (a) and (b)
C. (a) and (c)
D. none perpendicular
Answer: C
Mathematics
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