Section 2.3 Equations of a Line 167 Concept 1: Slope-Intercept Form For Exercises 7–18, determine the slope and the y-intercept of the line. (See Example 1.) 3 7 2 3 7. 8. 9. 10. y y 2 3x y 5 7x y x 4 x 1 11. 12. 13. 14. 15. 16. 17. 18. 7 8x 12y 9 9x 10y 4 y 0.625x 1.2 y 2.5x 1.8 In Exercises 19–24, match the equation with the correct graph. 3 2 19. y x 2 20. y x 3 21. 1 2 22. 23. 24. a. b. c. 5 4 3 2 1 21 1 5 4 3 2 1 21 1 d. e. f. 5 4 3 2 1 1 5 4 3 2 1 13 4 21 21 1 5 4 3 2 1 21 1 5 4 3 2 1 21 1 y For Exercises 25–30, write the equations in slope-intercept form (if possible).Then graph each line, using the slope and y-intercept. (See Example 2.) 25. y 2 4x 26. 3x 5 y 27. 3x 2y 6 5 4 y 543 2 1 1 2 3 4 5 1 2 3 4 5 x 3 2 1 7 6 5 4 y 543 2 1 1 2 3 4 5 1 2 3 x 3 2 1 8 7 6 5 4 y 543 1 2 3 4 5 2 1 1 2 x 3 2 1 543 1 2 3 4 5 2 3 4 5 x y 543 1 2 3 4 5 2 3 4 5 x y 543 1 2 3 4 5 2 3 4 5 x y 543 1 2 3 4 5 2 3 4 5 x y 543 1 2 3 4 5 2 3 4 5 x y 543 1 2 3 4 5 2 3 4 5 x y y 1 2 y x x 2 x 2 1 2 17x y 0 x y 0 18 2y y
miller_intermediate_algebra_4e_ch1_3
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