36.4k views
1 vote
Triangle NMO has vertices at N(−5, 2), M(−2, 1), O(−3 , 3). Determine the vertices of image N′M′O′ if the preimage is reflected over x = −4. N′(−3, 2), M′(−6, 1), O′(−5, 3) N′(−5, −6), M′(−2, −5), O′(−3, −7) N′(−5, −2), M′(−2, −3), O′(−3, −1) N′(−4, 2), M′(−1, 1), O′(−2, 3)

2 Answers

5 votes

Answer:

n,(-5, -6), M(-2, -5) o(-3, -7)

Explanation:

other guy wrong but here you go.

User Jstanley
by
8.9k points
4 votes

Notice that the reflection is over a line of the form x=constant; in this case, the y-coordinate of the reflected point stays the same while the x-coordinate changes as expressed by the transformation below


\begin{gathered} y\rightarrow y \\ x\rightarrow2a+x \\ where \\ x=a\rightarrow\text{ vertical line} \end{gathered}

Hence, in our case


\Rightarrow(x,y)=(2*-4-x,y)=(-8-x,y)

Transform points N, M, and O accordingly,


\begin{gathered} \Rightarrow N^(\prime)=(-8-(-5),2)=(-8+5,2)=(-3,2) \\ \Rightarrow M^(\prime)=(-8-(-2),1)=(-6,1) \\ \Rightarrow O^(\prime)=(-8-(-3),3)=(-5,3) \end{gathered}

Therefore, the answer is the first option (top to bottom)

User John Jacecko
by
7.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories