Question

Which statement explains how you could use coordinate geometry to prove the diagonals of a quadrilateral are perpendicular?

Answer 1

Answer:

(B)Use the slope formula to prove the slopes of the diagonals are opposite reciprocals.

Step-by-step explanation:

Two lines are perpendicular if the product of their slope is -1. That is, the slope of one is the opposite reciprocal of the other.

Mathematically, if their slopes are $m_1\: and \:m_2, then:$

$m_1m_2=-1\\m_1=-\dfrac{1}{m_2}$

Therefore, the correct option is B.

Answer 2

Answer:

B.

Step-by-step explanation:

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