<h3>Answer:</h3>
BT ⊥ MV
<h3>Explanation:</h3>
The direction vector BT is ...
... T - B = (5, 12) - (1, -4) = (4, 16)
The direction vector MV is ...
... V - M = (-4, 2) - (-8, 3) = (4, -1)
One is not a multiple of the other, so the lines are <em>not parallel</em>.
The dot-product of these direction vectors is
... (4, 16)•(4, -1) = 4·4 + 16·(-1) = 0
When the dot-product is zero, the vectors are perpendicular.
