I think the answer is 8x8 please dont judge me if it is wrong.
For this case we have that by definition, the equation of a line in the point-slope form is given by:

Where:
m: It is the slope of the line and
is a point through which the line passes.
We have the following equation of the slope-intersection form:

Where the slope is 
By definition, if two lines are perpendicular then the product of their slopes is -1.
Thus, a perpendicular line will have a slope:

Thus, the equation will be of the form:

Finally we substitute the given point and we have:

Answer:
Option B
Step-by-step explanation:
x+9-10=500
x-1=500
x=500+1=501
True
______
A closed circuit basically means everything is connected by wires and for this setup every device receives electricity making this true
Can you send us a picture of the question please