4kdy9ggpt8 4kdy9ggpt8

26-04-2022
Mathematics

contestada

Is the line y = 3x - 7 parallel or perpendicular to 3x + 9y

= 9? Explain your answer.

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escobarmaya2007 escobarmaya2007

26-04-2022

Answer:

Perpendicular

Step-by-step explanation:

Simplify 3x+9y=9 to 9y=-3x+9 and then to y=-1/3x+1

y=3x-7

and

y=-1/3x+1, 3 and -1/3 are negative reciprocals which makes these equations perpendicular.

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4 (x + 9) = 20 idk math