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Mathematics 27 Online
OpenStudy (anonymous):

need help :( @Data_LG2 I got D.

OpenStudy (anonymous):

OpenStudy (mathstudent55):

A vertical translation is a change in y. Replace y by y - k, where k is up for a positive k and down for a negative k.

OpenStudy (mathstudent55):

In this case, you need 3 units down. That means k = -3. That means y - k = y - (-3) = y + 3. Replace y with y + 3.

OpenStudy (anonymous):

How's it C? It said 3 units down? :/

OpenStudy (anonymous):

\(\LARGE y= \color{blue}{a}f(\color{red}{k}(x-\color{green}{d}))+\color{orange}{c}\) you already have \(y=\frac{2}{5}|x|+11\). Focus on \(\LARGE \color{orange}{c}=11\), since this identifies the vertical translation. You have to translate it 3 units down. so what will you do to the value of "C" in order to translate it down?

OpenStudy (mathstudent55):

Who said answer is C? \(y = \dfrac{2}{5}|x| + 11 \) y is replaced by y + 3: \(y + 3= \dfrac{2}{5}|x| + 11 \) \(y = \dfrac{2}{5}|x| + 8 \)

OpenStudy (anonymous):

:( oh... it's A? @mathstudent55

OpenStudy (mathstudent55):

yes

OpenStudy (anonymous):

Thank you for your explanation .

OpenStudy (mathstudent55):

You're welcome.

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