to get the equation of any straight line, we simply need two points off of it, let's use the ones provided in the picture below.


This is a simple Pythagorean theorem, which says that c2 = a2 + b2
So let us just apply it here:
c^2 = 4^2 + 4^2
c^2 = 16 + 16
c^2 = 32
c = <span>√32
c = </span><span>√2*16
c = 4</span><span><span>√2
</span>The correct answer is c = 4</span><span>√2.</span>
X=7 because 7+6=13 and 3•13=39