The function is [tex]y=x^3[/tex]
a vertical stretch means that if (a, b) is in the original function, the second function will contain the point:
(a, 4b)
For example: (2, 8) is in the graph of the original function.
If the graph of the function is stretched vertically by a factor of 4, this means that (2, 8) becomes (2, 8*4)=(2, 32)
So to describe this stretch, the equation must be [tex]y=4x^3[/tex]
Answer: [tex]y=4x^3[/tex]
