You answer is <span>K= 7.8</span>
If the two lines are parallel, then they have the same slope of 8/5
Let x be the measure of both legs since the given is an isosceles right triangle. By the Pythagorean theorem we calculate for the legs,
x² + x² = (5 sqrt 6)²
The value of x from the given equation is approximately 8.66 units.