The graph of function g is a vertical stretch of the graph of function f by a factor of 3. which equation describes function g? g(x)=f(x3) g(x)=3f(x) g(x)=13f(x) g(x)=f(3x)

i just took the test i can confirm this is the answer

The correct option is second, i.e., .

Explanation:

A functions g(x) is stretch or compressed of graph of function f(x) is defined by the equation,

Where, k is a constant and it shows the compress or stretch factor.

If k>0, then it is a stretch factor and the graph of f(x) is stretched by factor of k.

If k<0, then it is a compress factor and graph of f(x) is compressed by factor k.

Since the graph of g(x) is a vertical stretch of the graph of function f(x) by a factor of 3, therefore,

So, the option second is correct.

answer: the answer is 127 degrees