SOLUTION: Find the value of K to the right (K-2)x - (K-1)y - 7 = 0 is perpendicular to 2x

SOLUTION: Find the value of K to the right (K-2)x - (K-1)y - 7 = 0 is perpendicular to 2x - 7y +5 = 0 Thanks

Question 547181: Find the value of K to the right (K-2)x - (K-1)y - 7 = 0 is perpendicular to 2x - 7y +5 = 0
Thanks
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
If two lines are perpendicular, the product of their slopes is -1. And if the product of the slopes of two lines is -1, the lines are perpendicular.
Solving the two equations for , I get:
-->--> with
-->--> with
For the two lines to be perpendicular, it has to be:
-->-->-->-->-->-->-->
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