Molly works at an electronics store. Her last customer purchased a DVD player for $67.65 and five DVDs for $57.93, including tax
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Answer:
Step-by-step explanation:
Answer:
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Step-by-step explanation:
Let the slope of one line be 's' , then according to the given condition that the slope of second line is negative reciprocal of the first , We obtain the slope of the second line as .
So, the product of both the slopes is given by
This shows that whatever the slopes may be if they are negative reciprocal of each other then their product will always be -1
