SOLUTION: Please help me with this problem: The lines 3x + 4y = 5 and 2kx - 5y = 3 are parallel. What is the value of k?
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Question 315198: Please help me with this problem: The lines 3x + 4y = 5 and 2kx - 5y = 3 are parallel. What is the value of k? Answer by nerdybill(7384) (Show Source):
You can put this solution on YOUR website! Please help me with this problem: The lines 3x + 4y = 5 and 2kx - 5y = 3 are parallel. What is the value of k?
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If two lines are parallel their slopes are equal.
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Put both equations into the "slope-intercept" form to discover the slope of each:
3x + 4y = 5
4y = -3x + 5
y = (-3/4)x + 5/4
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2kx - 5y = 3
-5y = -2kx + 3
y = (2k/5)x - 3/5
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Set slopes equal to each other:
-3/4 = 2k/5
cross multiply
-15 = 8k
-15/8 = k
