Chapter 6 Review Algebra 1 Name _________________________________________ 1. What is the slope of a horizontal line? 2. What is the slope of a vertical line? Find the slope of the line passing through each pair of points. 3. (2, 7) and (4, 10) 5. Find the slope. 6. Find the slope. 6 5 5 4 4 3 -5 -4 -3 -2 4. (-1, 6) and (3, -4) 3 2 2 1 1 -1 1 2 3 4 -6 -5 -4 -3 -2 -1 5 -1 -1 1 2 3 4 5 6 -2 -2 -3 -3 -4 -4 -5 -5 -6 Graph each equation. 7. y 1 x4 3 8. y x 1 Find the equation of each line. (Hint – find both m and b) 9. ____________________ 10. ____________________ 6 6 5 5 4 4 3 3 2 m = _______ 2 -6 -5 -4 -3 -2 -1 -1 1 2 3 4 5 6 b = _______ m = _______ 1 1 -6 -5 -4 -3 -2 -1 -1 -2 -2 -3 -3 -4 -4 -5 -5 -6 -6 1 2 3 4 5 6 b = _______ Find the x and y intercepts of each the line. 11. 3x – 4y = 12 Graph each equation by finding the x and y intercepts. (Hint: Let x = 0 and Let y = 0) 12. x 2 y 4 13. 3 x 4 y 12 Graph each equation. 14. y 3 2( x 1) 15. y 3 3( x 1) Write each equation in slope-intercept form. 16. 4 x 3 y 12 17. x 5 y 15 y = __________ y = ___________ 18. Suppose an elevator is 400 feet above the ground It descends at a steady rate of 3 ft per second. Write an equation that models this situation. Write an equation in point-slope form for the line with the given slope and passes through the given point. 19. m 3 : (1, 4) 20. m 4 : (3, -2) ________________ ________________ Write an equation in slope-intercept form for the line through the given points. 23. 5,9 ; 3,5 24. 7,4 ; 11,14 y = ___________ y = ___________ 25. Tell whether each of the following lines is parallel, perpendicular, or neither to y 2 x2 3 a. - 15 y 25 x 9 b. y _______________ _______________ 3 x2 2 c. 3 y 3 x 5 ______________ Write an equation in the slope-intercept forms for a line that passes through the given point and is parallel to the given line. 26. 2 y x 4 ; 6,5 3 Write an equation in slope-intercept form for a line that passes through the given point and is perpendicular to the given line. 27. y 2 x 5 ; 4,1