Which of the following is the equation of a line whose slope is 3 and which passes through the point (2,7)? 1. y=x + 3
2. y= 3x + 13
3. y=3x + 1
4. y= -3x + 5

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.

Iam not good at math i wish i could