Starting with the parent function f(x) = √x, Marilyn replaces x with x +
k, where k is positive, to form a new function, g(x). The result will
be that her graph will translate horizontally k units to the left.
The "horizontal" distance is 8-2 = 6.
The "vertical" distance is 7-3 = 4.
The Pythagorean theorem tells you the straight line distance is then
√(6² + 4²) = √52 = 2√13 ≈ 7.21
