# 5.9.1 - Test: Transformations Unit Test Part 1

Can anybody help me?????

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1. This is 15 questions I would appreciate ANY help I can get class ends in 12 days.

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2. so, if you start posting questions now, you have plenty of time.
I assume you have some idea on how to solve at least some of them ...

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3. If point P left parenthesis 4 comma 11 right parenthesis is reflected across the line y = 3, what are the coordinates of its reflection image?
A. left parenthesis 2 comma 11 right parenthesis
B. left parenthesis 11 comma 4 right parenthesis
C. left parenthesis 4 comma negative 11 right parenthesis
D. left parenthesis 4 comma negative 5 right parenthesis

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4. The vertices of a triangle are P(4, 1), Q(2, –8), and R(–8, 1). What are the vertices of the image reflected across the y-axis?
A. P'(4, –1), Q'(2, 8), and R'(–8, –1)
B. P'(–4, 1), Q'(–2, –8), and R'(8, 1)
C. P'(–4, –1), Q'(–2, 8), and R'(8, –1)
D. P'(4, 1), Q'(2, –8), and R'(–8, 1)

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5. I much prefer the 2nd one.
did you try actually reflecting each vertex across the y-axis?
If so, you can easily see that (x,y)→(-x,y)
so just change the sign of the x-coordinate for each point.
So, knowing that (4,1)→(-4,1)
that leaves only B as a choice.

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6. If point P left parenthesis 4 comma 11 right parenthesis is reflected across the line y = 3, what are the coordinates of its reflection image?
A. left parenthesis 2 comma 11 right parenthesis
B. left parenthesis 11 comma 4 right parenthesis
C. left parenthesis 4 comma negative 11 right parenthesis
D. left parenthesis 4 comma negative 5 right parenthesis
Can you help with this one?
It would be C right??

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