Understand Parallel Line Transformation Properties
Middle School Math · Flashcards · Recall
MIDDLE SCHOOL MATH · FLASHCARDS
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QUESTION
What is the image relationship: If
l
1
⊥
l
2
l_1 \perp l_2
l
1
⊥
l
2
, what is true about
M
(
l
1
)
M(l_1)
M
(
l
1
)
and
M
(
l
2
)
M(l_2)
M
(
l
2
)
for a rigid motion
M
M
M
?
QUESTION
What is the image relationship: If
l
1
∥
l
2
l_1 \parallel l_2
l
1
∥
l
2
, what is true about the distance between them after a rigid motion?
QUESTION
What happens to the slope of a line under reflection across the
x
x
x
-axis?
Tap to flip before you grade
ANSWER
The slope changes from
m
m
m
to
−
m
-m
−
m
. Flipping vertically negates the slope.
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