SOLUTION: Explain how you can tell that the graphs of 7x - 3y = 5 and 7x - 3y = 8 are parallel without finding their slopes.

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Question 585943: Explain how you can tell that the graphs of 7x - 3y = 5 and
7x - 3y = 8 are parallel without finding their slopes.
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
If we let z = 7x-3y, then we can say that z = 5 and z = 8. This is a contradiction and this visually corresponds to parallel lines (since they never intersect).