Math  /  Geometry

QuestionWhich transformation of LMN\triangle L M N produces the image LMN\triangle L^{\prime} M^{\prime} N^{\prime} ?
A reflection across the yy-axis, then a rotation 180180^{\circ} clockwise.
A rotation 180180^{\circ} clockwise, then a reflection over the yy-axis.
A translation of 1.5 units left, 0.5 unit up, then a reflection across the xx-axis.
A translation of 1.5 units left and 1.5 units down.

Studdy Solution

STEP 1

What is this asking? Which set of moves takes triangle LMNLMN and puts it in the position of triangle LMNL'M'N'? Watch out! The order of transformations matters!
Flipping and *then* sliding is different than sliding and *then* flipping!

STEP 2

1. Analyze the change in L
2. Check if the same transformation works for M and N

STEP 3

Alright, let's **focus** on point LL first.
It starts at (0,2)(0, 2) and ends up at (3,1.5)(-3, -1.5).
So, something funky is definitely happening!

STEP 4

Let's look at the *x*-coordinate.
It goes from 00 to 3-3.
That's a shift of 3-3 units.
In other words, 0+(3)=30 + (-3) = -3.

STEP 5

Now, the *y*-coordinate goes from 22 to 1.5-1.5.
That's a change of 3.5-3.5 units.
That is, 2+(3.5)=1.52 + (-3.5) = -1.5.

STEP 6

So, for LL, we have a shift of (3,3.5)(-3, -3.5).
Let's see if this works for the other points!

STEP 7

Point MM starts at (2,1)(-2, 1) and moves to (5,2.5)(-5, -2.5).

STEP 8

The *x*-coordinate changes by 3-3 because 2+(3)=5-2 + (-3) = -5.
The *y*-coordinate changes by 3.5-3.5 because 1+(3.5)=2.51 + (-3.5) = -2.5.
Woohoo! Same change as LL!

STEP 9

Finally, point NN starts at (1,1)(1, 1) and lands at (2,2.5)(-2, -2.5).

STEP 10

The *x*-coordinate changes by, you guessed it, 3-3 because 1+(3)=21 + (-3) = -2.
The *y*-coordinate also changes by 3.5-3.5 because 1+(3.5)=2.51 + (-3.5) = -2.5.
It's a match!

STEP 11

So, all three points move the *exact same way*: 33 units left and 3.53.5 units down.
That's a translation!

STEP 12

The correct transformation is a translation of 1.51.5 units left and 1.51.5 units down... oh wait!
That's not quite right.
It's actually a translation of 33 units left and 3.53.5 units down.
None of the provided options are correct!

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