Question

Identify the visual effect in case of graphically transforming the function $f\left(x\right)=x^2$ to $2f\left(x\right)$.

• A. Vertically shrink by $2$
• B. shift down by $2$
• C. Vertically stretch by $2$
• D. None of these

Answer 1

Answer: (C)

Vertically stretch by $2$

$f\left(x\right)=x^2$

$2f\left(x\right)=2x^2$

So, the graph transformed vertically stretch by $2$ units.