Answer:
irrational
Step-by-step explanation:
Use the Pythagorean theorem.
5² + 6² = c²
25 + 36 = c²
c² = 61
7² = 49
6² = 64
61 is between 7² and 8², so it is not rational.
It is true because the y and x will always be the same number and a vertical line has no slope thus equaling 0,0
5

x 5
5

x 5
5³ x 5
They all work because their exponents all add up to 11.
Hope this helps!