(X-3)^2/9+(y-6)^2/16=1
The endpoints of the major axis are:
(-1, 6) and (7,6)

(0,6) and (6,6)
(3, 2) and (3, 10)

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.