5 minute check 8 Click the mouse button or press the Space Bar to display the answers.

5 minute check 8a

8-1 Translations

Video Tutor Help Translation Dilation Reflection Writing a rule to describe a translationWriting a rule to describe a translation (8-1) Graphing translationsGraphing translations (8-1) Translations Transformation Khan Academy

Video Tutor Help Writing a rule to describe a translation Graphing translations Graphing reflections of a shape Finding the angle of rotation Graphing rotations Graphing dilation images

Note Taking Guide Worksheets Practice 8-1 Guided Problem Solving 8-1

Vocabulary Practice Vocabulary 8A: Graphic Organizer Vocabulary 8B: Reading Comprehension Vocabulary 8C: Reading/Writing Math Symbols Vocabulary 8D: Visual Vocabulary Practice Vocabulary 8E: Vocabulary C Vocabulary 8F: Vocabulary Review Puzzle Vocabulary (Electronic) Flash Cards

Additional Lesson Examples Lesson 8-1 Step-by-Step Examples

Lesson Readiness Lesson 8-1 Lesson Quiz Problem of the Day Lesson 8-1

Example 8-1a Copy below on graph paper. Then draw the image of the figure after a translation of 3 units right and 2 units up. Step 1 Move each vertex of the triangle 3 units right and 2 units up. Step 2 Connect the new vertices to form the image. Answer: Draw a Translation

LESSON 8-1 ABC has vertices A (1, –3), B (3, 0), and C (4,–2). Graph ABC and its image after a translation to the left 3 units and up 2 units. What are the coordinates of its images? Slide each vertex left 3 units and up 2 units. Translations Connect the images of the vertices. The coordinates of its image are A'(-2, -1), B'(0, 2), C'(1,0). Additional Examples

Example 8-2a Graph  ABC with vertices A(–2, 2), B(3, 4), and C(4, 1). Then graph the image of  ABC after a translation of 2 units left and 5 units down. Write the coordinates of its vertices. Translation in the Coordinate Plane

Example 8-2a The coordinates of the vertices of the image are A'(–4, –3), B'(1, –1), and C'(2, –4). Notice that these vertices can also be found by adding –2 to the x–coordinates and –5 to the y–coordinates, or (–2, –5). OriginalImage

Example 8-2a Answer: A'(–4, –3), B'(1, –1), and C'(2, –4)

LESSON 8-1 Write a rule to describe the translation of G (–5, 3) to G (–1, –2). Point G is moved 4 units to the right and 5 units down. So, the translation adds 4 to the x-coordinate and subtracts 5 from the y-coordinate. The rule is (x, y) (x + 4, y – 5). Translations Additional Examples