Question

What transformation takes the graph of f(x)=3x+8 to the graph of g(x)=3x+6 ?

Answer 1

Answer:

D. Translation 2 units down.

Step-by-step explanation:

We have been given a transformation rule and we are asked to find the transformation rule.

Let us recall the transformation rule.

$f(x)\rightarrow f(x-a)=\text{Graph shifted to right by a units}$

$f(x)\rightarrow f(x+a)=\text{Graph shifted to left by a units}$

$f(x)\rightarrow f(x)-a=\text{Graph shifted downwards by a units}$

$f(x)\rightarrow f(x)+a=\text{Graph shifted upwards by a units}$

Upon looking at our given transformation, we can see that $f(x)=3x+8$ is shifted downwards by 2 units to get graph of $g(x)$ as:

$g(x)=(3x)+8-2$

$g(x)=3x+6$

Therefore, option D is the correct choice.

Answer 2

Answer:

Translation 2 units downward

Step-by-step explanation:

If we start with the graph of f(x) = 3x + 8 and translate it 2 units downward, we'll end up with the graph of g(x) = 3x + 6.  Note:  8 - 2 = 6.