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Coordinate Grid Reflections

Authored by Barbara White

Mathematics

8th Grade

CCSS covered

Used 1+ times

Coordinate Grid Reflections
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10 questions

Show all answers

1.

MATCH QUESTION

1 min • 1 pt

Match the rules with the correct description.

translate

down 1 unit

(x,y)→ (x, −y)\left(x,y\right)\rightarrow\ \left(x,\ -y\right)

translate

left 1 unit

(x,y)→ (x, y−1)\left(x,y\right)\rightarrow\ \left(x,\ y-1\right)

reflect

over the y-axis

(x,y)→ (−x, y)\left(x,y\right)\rightarrow\ \left(-x,\ y\right)

reflect

over the x-axis

(x,y)→ (x−1, y)\left(x,y\right)\rightarrow\ \left(x-1,\ y\right)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

2.

GRAPHING QUESTION

3 mins • 1 pt

Jabari wants to reflect a figure over the x-axis.

Match the line on the graph to the line of reflection Jabari is using.

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

If GHIJ is reflected over the x-axis, which quadrant will the image land in?

Q I

Q II

Q III

Q IV

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

The points show the coordinates of the vertices of ΔVWX before and after a reflection.

What was the line of reflection?

the

x-axis

the

y-axis

the

origin

No way to tell

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

True or False:

If JKLMN is reflected over the x-axis, L' will be located at (-3,4).

True

False

Answer explanation

Media Image

L' would be located at (-3,4) if the figure was reflected over the y-axis!

If we reflect over the x-axis L' will be located at (3,-4).

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

True of False:

If JKLMN is reflected over the y-axis, the shape will get BIGGER.

True

False

Answer explanation

Reflections are RIGID TRANSFORMATIONS. This means reflections preserve size.

Tags

CCSS.HSG.CO.A.2

7.

DROPDOWN QUESTION

1 min • 1 pt

When you reflect a point over the y-axis,

the x-coordinate ​ (a)   and the y-coordinate ​ (b)   .

changes to the opposite
stays the same

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

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