Question 3 The graph of a linear function passes through the points (2, 3) and (5,9). Which
equation models this function?

Cd is the perpendicular bisector of both xy and st, and cy=20.find xy

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.