Algebra II Honors Chapter 2 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Use the vertical-line test to determine which graph represents a function. y a. –4 –2 4 4 2 2 O 2 4 –2 O –2 –4 –4 y –2 –4 x –2 c. –4 y b. 4 2 2 2 4 x –4 –2 O –2 –2 –4 –4 Short Answer 2. Make a mapping diagram for the relation. {(–2, 1), (–1, –6), (0, –5), (1, 3)} Write an inequality for the graph. 4 x 2 4 x y d. 4 O 2 3. y 6 3 –6 –3 O 3 6 x –3 –6 4. Find the domain and range of the relation and determine whether it is a function. y 4 2 –4 –2 O 2 4 –2 –4 Graph the absolute value inequality. 5. |x + 5| y – 5 6. y |x + 2| – 2 7. Write an inequality for the graph. x y 6 3 –6 –3 O 3 6 x –3 –6 Graph the inequality. 8. –2x – 2y –7 9. 3x + 3y –4 10. Graph the equation 3x – 4y = –12. 11. Graph the equation . 12. Describe the relationship between the graph of the graph of . Then graph 13. For , 15. Graph the function . . 14. Suppose Find the value of in terms of a vertical and a horizontal translation of and . . . 16. Write the equation that is the translation of 17. What is the vertex of the graph of the function left 8 units and up 10 units. ? Graph the absolute value equation. 18. 19. Find an equation for the line: 20. through (–5, –6) and vertical. 1 21. through (–1, 5) and perpendicular to y = x + 3. 2 22. through (5, 6) and parallel to y = 5 x + 3. 2 23. Find the point-slope form of the equation of the line passing through the points (7, 4) and (–5, 8). Write in standard form an equation of the line passing through the given point with the given slope. 24. slope = –2; (–5, 3) Write an equation for the vertical translation. 25. ; 7 units up Algebra II Honors Chapter 2 Answer Section MULTIPLE CHOICE 1. ANS: C PTS: 1 OBJ: 2-1.2 Identifying Functions KEY: graphing | vertical-line test DIF: L2 REF: 2-1 Relations and Functions TOP: 2-1 Example 5 SHORT ANSWER 2. ANS: –2 1 –1 –6 0 –5 1 3 PTS: 1 DIF: L2 REF: 2-1 Relations and Functions OBJ: 2-1.1 Graphing Relations TOP: 2-1 Example 3 KEY: relation | mapping diagram | ordered pair 3. ANS: y |x + 3| + 2 PTS: 1 DIF: L2 REF: 2-7 Two-Variable Inequalities OBJ: 2-7.2 Graphing Two-Variable Absolute Value Inequalities STA: CA A2 1.0 TOP: 2-7 Example 4 KEY: absolute value 4. ANS: Domain: x > 0; range: y > 0; yes, it is a function. PTS: 1 DIF: L3 OBJ: 2-1.2 Identifying Functions KEY: domain | range | relation 5. ANS: REF: 2-1 Relations and Functions TOP: 2-1 Example 5 y 6 3 –6 –3 O 3 6 x –3 –6 PTS: 1 DIF: L3 REF: 2-7 Two-Variable Inequalities OBJ: 2-7.2 Graphing Two-Variable Absolute Value Inequalities STA: CA A2 1.0 TOP: 2-7 Example 3 KEY: absolute value 6. ANS: y 6 3 –6 –3 O 3 6 x –3 –6 PTS: 1 DIF: L2 REF: 2-7 Two-Variable Inequalities OBJ: 2-7.2 Graphing Two-Variable Absolute Value Inequalities STA: CA A2 1.0 TOP: 2-7 Example 3 KEY: absolute value 7. ANS: 3x – 4y –12 PTS: 1 DIF: L4 OBJ: 2-7.1 Graphing Linear Inequalities KEY: graphing | inequality 8. ANS: REF: 2-7 Two-Variable Inequalities STA: CA A2 1.0 TOP: 2-7 Example 1 y 6 4 2 –6 –4 –2 O –2 2 4 6 x –4 –6 PTS: 1 DIF: L2 OBJ: 2-7.1 Graphing Linear Inequalities KEY: inequality | graphing 9. ANS: REF: 2-7 Two-Variable Inequalities STA: CA A2 1.0 TOP: 2-7 Example 1 y 6 4 2 –6 –4 –2 O –2 2 4 6 x –4 –6 PTS: 1 DIF: L2 OBJ: 2-7.1 Graphing Linear Inequalities KEY: inequality | graphing 10. ANS: REF: 2-7 Two-Variable Inequalities STA: CA A2 1.0 TOP: 2-7 Example 1 y 12 8 4 –12 –8 –4 O –4 4 8 12 x –8 –12 PTS: 1 DIF: L3 OBJ: 2-2.1 Graphing Linear Equations KEY: graphing | linear equation 11. ANS: REF: 2-2 Linear Equations TOP: 2-2 Example 1 y 4 2 –4 –2 O 2 4 x –2 –4 PTS: 1 DIF: L2 OBJ: 2-2.1 Graphing Linear Equations KEY: linear equation | graphing 12. ANS: 3 units left and 4 units down; REF: 2-2 Linear Equations TOP: 2-2 Example 1 y 6 4 2 –6 –4 –2 O –2 2 4 6 x –4 –6 PTS: 1 DIF: L4 OBJ: 2-6.1 Translating Graphs KEY: translation | horizontal line 13. ANS: –10 REF: 2-6 Families of Functions STA: CA A2 1.0 TOP: 2-6 Example 2 PTS: 1 DIF: L2 OBJ: 2-1.2 Identifying Functions KEY: function notation 14. ANS: 3 1 7 REF: 2-1 Relations and Functions TOP: 2-1 Example 6 PTS: 1 DIF: L3 OBJ: 2-1.2 Identifying Functions KEY: function notation 15. ANS: REF: 2-1 Relations and Functions TOP: 2-1 Example 6 y 6 3 –6 –3 O 3 6 x –3 –6 PTS: 1 DIF: L2 OBJ: 2-6.1 Translating Graphs KEY: horizontal translation REF: 2-6 Families of Functions STA: CA A2 1.0 TOP: 2-6 Example 2 16. ANS: PTS: 1 DIF: L2 OBJ: 2-6.1 Translating Graphs KEY: horizontal translation 17. ANS: (4, –5) REF: 2-6 Families of Functions STA: CA A2 1.0 TOP: 2-6 Example 2 PTS: 1 DIF: L3 REF: 2-5 Absolute Value Functions and Graphs OBJ: 2-5.1 Graphing Absolute Value Functions STA: CA A2 1.0 TOP: 2-5 Example 1 KEY: absolute value | vertex 18. ANS: y 16 12 8 4 –8 –4 O 4 8 x –4 PTS: 1 DIF: L2 REF: 2-5 Absolute Value Functions and Graphs OBJ: 2-5.1 Graphing Absolute Value Functions STA: CA A2 1.0 TOP: 2-5 Example 1 KEY: absolute value 19. ANS: 4 –8 –4 O y 4 8 x –4 –8 –12 –16 PTS: 1 DIF: L2 REF: 2-5 Absolute Value Functions and Graphs OBJ: 2-5.1 Graphing Absolute Value Functions STA: CA A2 1.0 TOP: 2-5 Example 1 KEY: absolute value 20. ANS: x = –5 PTS: OBJ: KEY: 21. ANS: y = 2x 1 DIF: L2 REF: 2-2 Linear Equations 2-2.2 Writing Equations of Lines TOP: 2-2 Example 7 vertical line | horizontal line | equation of a line 7 PTS: 1 DIF: L2 REF: 2-2 Linear Equations OBJ: 2-2.2 Writing Equations of Lines TOP: 2-2 Example 7 KEY: slope | perpendicular | equation of a line 22. ANS: 5 13 y= x 2 2 PTS: 1 DIF: L2 OBJ: 2-2.2 Writing Equations of Lines KEY: slope | equation of a line 23. ANS: 1 y – 4 = (x – 7) 3 REF: 2-2 Linear Equations TOP: 2-2 Example 7 PTS: 1 DIF: L2 OBJ: 2-2.2 Writing Equations of Lines KEY: point-slope form | ordered pair 24. ANS: 2x + y = –7 REF: 2-2 Linear Equations TOP: 2-2 Example 5 PTS: 1 DIF: L2 REF: 2-2 Linear Equations OBJ: 2-2.2 Writing Equations of Lines TOP: 2-2 Example 4 KEY: point-slope form | standard form of linear equation 25. ANS: PTS: 1 DIF: L3 OBJ: 2-6.1 Translating Graphs KEY: vertical translation REF: 2-6 Families of Functions STA: CA A2 1.0 TOP: 2-6 Example 1