Question 1087993
Find an equation of the line satisfying the given conditions. Through (4,9); perpendicular 
to 6x + 8y = 96 
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Step 1, find the slope of 6x + 8y = 96
The slope of lines perpendicular = -1/(slope of the line).
Call it m.
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Step 2, use y-y1 = m*(x-x1) where (x1,y1) is the point (4,9)