Answer
See below
Work Step by Step
Vertically stretching a graph of $y=f(x)$ by factor $c\gt 1$ is achieved by defining the new function as
$y=c\cdot f(x)$
Vertically compressing is done by $y=\displaystyle \frac{1}{c}\cdot f(x).$
Horizontal stretching is done by $y=f(\displaystyle \frac{1}{c}x)$
Horizontal compression is done by $y=f(cx)$
Reflecting across the x-axis: $y=-f(x)$
Reflecting across the y-axis: $y=f(-x)$
Examples:
