SOLUTION: How do I determine which two equations represent parallel lines. (a)y=-7x+11 (b)y=7x+1 (c)y=1/2x+1 (d)-7x+2 Multiple choice: (a) a and b (b) b and c (c) a and c (d) a

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Question 82801: How do I determine which two equations represent parallel lines.
(a)y=-7x+11
(b)y=7x+1
(c)y=1/2x+1
(d)-7x+2
Multiple choice:
(a) a and b
(b) b and c
(c) a and c
(d) a and d
Please HELP!!!

Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
a and d both have a slope of -7
They are parallel.
Cheers,
Stan H.

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