Question

9. Identify a horizontal or vertical stretch or compression of the function f(x) = x² by observingthe equation of the function g(x) = 5(x)².The base graph vertically stretched by a factor of 5.The base graph horizontally compressed by a factor of 5.The base graph vertically compressed by a factor of 5.The base graph horizontally stretched by a factor of 5.

Answer 1

If a function f(x) is stretched vertically by a scale factor of k, then

The new function is k . f(x)

Since the given function is

$f(x)=x^2$

Since the new function is

$g(x)=5x^2$

Then k = 5

f(x) is stretched vertically by a scale factor of 5

The correct answer is

The base graph vertically stretched by a factor of 5

The first choice