Answer:
y=-1/3x+10
Explanation:
y=3x+1
The line perpendicular would have a negative reciprocal of the slope of 3 which means that you would add a negative sign and then flip 3/1 into 1/3 resulting in -1/3 as the slope.
To find the line that passes through the point (6,8) you would plug the values into the equation y=mx+b
m=-1/3x as found above
6 is the x-value and 8 is the y-value
8=(-1/3)(6)+b
8=-2+b
Add 2 on both sides and you get b to equal 10