Are the graphs of the lines in the pair parallel? Explain.

y = 6x + 927x – 3y = –81

a. Yes, since the slopes are the same and the y-intercepts are the same.

b. No, since the slopes are different.

c. No, since the y-intercepts are different.

d. Yes, since the slopes are the same and the y-intercepts are different.

y = 6x + 9----------slope is 627x – 3y = –81----------3y=27x+81-------y=9x+27---------slope is 9

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