A line passes through the points (p, a) and (p, -a) where p and a are real numbers andp + 0. Describe each of the following. Explain your reasoning. 1. slope of the line 2. equation of the line 3. y-intercept 4. slope of a line perpendicular to the given line​

Could you make it more clear?

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.