If the line, is at a distance and from the lines and respectively, then the sum of all possible values of and is ______.
Option: 1 10
Option: 2 20
Option: 3 30
Option: 4 40
Apply distance between parallel line formula
Distance between the parallel line
Divide equation (2) by 2, to make coefficient of x and y same
Sum = 12
Again, Multiply equation (1) by 3
Sum = 12 + 18 = 30
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