The equation 6x-y=3 is rewritten y = 6x-3
You can see that the slope of the line is 6. The slope of the perpendicular lines is -1/6.
So the equation of the perpendicular line passing through (7,-2) is written
y+2 = -(1/6)(x-7) = -(1/6)x + (7/6) Then y = -(1/6)x +(7/6) -2 = -(1/6)x + (7/6) - (12/6)
or
y = -(1/6)x -(5/6) (The perpendicular line)