Question 413567
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Hi
Find an equation of the line containing the point (6,9)
 y = -9x + 8         | Yes same as 9x+y=8 
"If" the new line is to be 'perpendicular' to the above..then Yes, its slope = 1/9
New Line:
y-9=1/9(x-6)         | Yes.  {{{y - y[1] = m(x - x[1])}}} 
y =1/9(x-6) + 9
y = 1/9(x) - 6/9 + 9
y= (1/9)x + 75/9    OR x-9y = -75