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Tom [10]
3 years ago
13

Are the lines y = -x - 6 and 3x - 3y = 9 perpendicular? Explain

Mathematics
1 answer:
irakobra [83]3 years ago
4 0

Answer:

the lines are perpendicular

Step-by-step explanation:

if they are perpendicular the products of their gradients would be -1

the gradient of y=-x-6 is -1

the second equation needs to written to conform to y=mx+c

hence, 3x-3y=9

3x-9=3y

y=3x-9/3=x-3.the gradient of this line is 1

1x-1=  -1

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