The graph of a line in the xy-plane has slope 1/3 and contains the point (9,1). The graph of a second line passes through the points (-2,4) and (5,-3). If the two lines intersect at (a, b), what is the value of a+b?

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.

Ireally don’t understand your problem do you have a better picture of it

Value is 6 i think k