Example 4 illustrating the vertical stretch transformation of a function, where g(x) = 3f(x) results in each y-value being multiplied by 3.
Graph showing the transformation of function f(x) to g(x) = 3f(x), with a table of values and a note that each y-value is multiplied by 3, resulting in a vertical stretch from the x-axis by a factor of 3.