3. Line R is represented by the equation y = x + 2. Line S is perpendicular to Line R and passes through the point (-6,4). What is the equation for Line S?

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.