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Back to Tutor Intake Assessment: Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates

8.G.A.3 Tutor Intake -- Coordinate Rules for Transformations

This short check helps your tutor see where to start. Work on your own,
without a calculator. Do your best -- the goal is to find what to work
on together, not to grade you.

Grade 8·6 problems·~8 min·Common Core Math - Grade 8·container·8-g-a-3
Work through problems with immediate feedback
A

Concepts

1

Which coordinate rule correctly describes a reflection across the
y-axis?

2

A transformation's coordinate rule is (x, y) to (3x, 3y). Is this
transformation rigid or non-rigid, and why?

B

Procedures

1

Point (2, -1) is rotated 90 degrees counterclockwise about the
origin, using the rule (x, y) to (-y, x). What is the
x-coordinate of the image point? Enter a number.

2

Point (3, 4) is reflected across the x-axis. What is the image
point?

3

Point (2, 5) is dilated centered at the origin with scale factor
3. What is the y-coordinate of the image point? Enter a number.

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