2_4 - Chapter 2 237 Graphs 2.4 Lines 1 undefined 0...

This preview shows pages 1–5. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 2 237 Graphs 2.4 Lines 1. undefined, 0 2. (3,0), (0,2) 3. y = b , y- intercept 4. True 5. False 6. True 7. (a) Slope = 1- 2- = 1 2 (b) If x increases by 2 units, y will increase by 1 unit. 8. (a) Slope = 1-- 2- = - 1 2 (b) If x increases by 2 units, y will decrease by 1 unit. 9. (a) Slope = 1- 2 1- (- 2) = - 1 3 (b) If x increases by 3 units, y will decrease by 1 unit. 10. (a) Slope = 2- 1 2- (- 1) = 1 3 (b) If x increases by 3 units, y will increase by 1 unit. 11. ( x 1 , y 1 ) ( x 2 , y 2 ) 12. ( x 1 , y 1 ) ( x 2 , y 2 ) (2,3) (4,0) Slope = y 2- y 1 x 2- x 1 =- 3 4- 2 = - 3 2 (4, 2 ) (3, 4 ) Slope = y 2- y 1 x 2- x 1 = 4- 2 3- 4 = 2- 1 = - 2 Chapter 2 Graphs 238 13. ( x 1 , y 1 ) ( x 2 , y 2 ) 14. ( x 1 , y 1 ) ( x 2 , y 2 ) (- 2,3) (2,1) Slope = y 2- y 1 x 2- x 1 = 1- 3 2- (- 2) =- 2 4 = - 1 2 (- 1, 1) (2, 3) Slope = y 2- y 1 x 2- x 1 = 3- 1 2- (- 1) = 2 3 15. ( x 1 , y 1 ) ( x 2 , y 2 ) 16. ( x 1 , y 1 ) ( x 2 , y 2 ) (- 3,- 1) (2,- 1) Slope = y 2- y 1 x 2- x 1 =- 1- (- 1) 2- (- 3) = 5 = (4, 2 ) (- 5, 2 ) Slope = y 2- y 1 x 2- x 1 = 2- 2- 5- 4 =- 9 = 17. ( x 1 , y 1 ) ( x 2 , y 2 ) 18. ( x 1 , y 1 ) ( x 2 , y 2 ) (- 1,2) (- 1,- 2) Slope = y 2- y 1 x 2- x 1 =- 2- 2- 1- (- 1) =- 4 Slope is undefined. (2, 0 ) (2, 2) Slope = y 2- y 1 x 2- x 1 = 2- 2- 2 = 2 Slope is undefined. Section 2.4 Lines 239 19. 20. 21. 22. 23. 24. 25. 26. Chapter 2 Graphs 240 27. Slope = 4 ⇒ if x increases by 1, y increases by 4 original point 1,2 ( 29 Answers will vary. Three possible points are: x = 1 + 1 = 2 and y = 2 + 4 = 6 2,6 ( 29 x = 2 + 1 = 3 and y = 6 + 4 = 10 3,10 ( 29 x = 3 + 1 = 4 and y = 10 + 4 = 14 4,14 ( 29 28. Slope = 2 ⇒ if x increases by 1, y increases by 2 original point - 2,3 ( 29 Answers will vary. Three possible points are: x = - 2 + 1 = - 1 and y = 3 + 2 = 5- 1,5 ( 29 x = - 1 + 1 = 0 and y = 5 + 2 = 7 0,7 ( 29 x = + 1 = 1 and y = 7 + 2 = 9 1,9 ( 29 29. Slope = - 3 2 ⇒ if x increases by 2, y decreases by 3 original point 2,- 4 ( 29 Answers will vary. Three possible points are: x = 2 + 2 = 4 and y = - 4- 3 = - 7 4,- 7 ( 29 x = 4 + 2 = 6 and y = - 7- 3 = - 10 6,- 10 ( 29 x = 6 + 2 = 8 and y = - 10- 3 = - 13 8,- 13 ( 29 30. Slope = 4 3 ⇒ if x increases by 3, y increases by 4 original point - 3,2 ( 29 Answers will vary. Three possible points are: x = - 3 + 3 = 0 and y = 2 + 4 = 6 0,6 ( 29 x = + 3 = 3 and y = 6 + 4 = 10 3,10 ( 29 x = 3 + 3 = 6 and y = 10 + 4 = 14 6,14 ( 29 31. Slope = - 2 ⇒ if x increases by 1, y decreases by 2 original point - 2,- 3 ( 29 Answers will vary. Three possible points are: x = - 2 + 1 = - 1 and y = - 3- 2 = - 5- 1,- 5 ( 29 x = - 1 + 1 = 0 and y = - 5- 2 = - 7 0,- 7 ( 29 x = + 1 = 1 and y = - 7- 2 = -...
View Full Document

{[ snackBarMessage ]}

Page1 / 13

2_4 - Chapter 2 237 Graphs 2.4 Lines 1 undefined 0...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online