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Without graphing, identify the equation of the axis of symmetry for f(x)=-3|x-2|-7

Without graphing, identify the equation of the axis of symmetry for f(x)=-3|x-2|-7-example-1
User Xnyhps
by
2.5k points

2 Answers

28 votes
28 votes

Answer: other guy is wrong it’s x= -2

Explanation:

User JohnH
by
2.2k points
13 votes
13 votes

Solution:

Given:


f(x)=-3|x-2|-7

From the absolute function, the axis of symmetry is;


\begin{gathered} y=|x-a| \\ where: \\ a\text{ is the axis of symmetry} \end{gathered}

Hence, comparing it to the equation given;


\begin{gathered} f(x)=-3|x-2|-7 \\ y=|x-a| \\ \\ a=2 \\ Hence,\text{ the axis of symmetry is at x = 2} \end{gathered}

Therefore, OPTION C is correct.