I think it's origin, IDK for sure
Slope of line
m= (y2-y1)/(x2-x1)
=(-4--6)/(6--2)
=2/8
=1/4
Line in two point form
(y-y1)=m(x-x1)
y--2=(1/4)(x-6)
y+2=(1/4)(x-6)
simplify
4(y+2)=x-6 =>
x-4y-14=0
Alternatively, use the slope intercept form:
y--2=(1/4)(x-6) =>
y=(1/4)x - 3/2-2 =>
y=(1/4)x -7/2
X = 5. Since the shape is a rectangle. you know those opposite sides will be equal in length. So you have to set the two terms equal to each other and then solve for x.
I have attached a picture of the work.
I hope this helps. (:
R=23 because its slope the formula is Y-Y/X-X