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- 1. Bell Ringer Evaluate each expression. 1) .25x + 2 for x = 16 2) -2x – 5 for x = 3 Solve each equation for y. 3) y – 5 = 4x 4) 2y + 6 = -8x
- 2. What is a linear equation ? An equation whose graph is a line. Slope-Intercept Form
- 3. What is a y – intercept ? Where the line crosses the y – axis. Slope-Intercept Form y = m x + b where m = slope b = y-intercept
- 4. Slope-Intercept Form y = m x + b What is the slope and y-intercept of: y = 4x + 2 y = -2x - 1
- 5. What is the slope and y-intercept of: y = 3x – 5 y = -2x y = 4/5x + 5 You try!
- 6. Write an equation of the line with: m = 3 and y-intercept of 7 m = -1 and y-intercept of -2
- 7. Write an equation of the line with the following slope and y – intercept: <ul><li>m = -.5, y - intercept = 3 </li></ul><ul><li>m = 1, y - intercept = -1 </li></ul><ul><li>m = 2/3, y - intercept = 0 </li></ul>You try!
- 8. (0,2) and (4,-1) y-intercept is 2
- 9. (-2,2) and (4, 4) y-intercept is -2
- 10. Find the slope given your two points. Then write an equation in slope-intercept form using the y-intercept. (-1,5) and (3,-3) y – intercept: 0 You try! (3,2) (4,6) y – intercept: 1
- 11. Graphing with slope-intercept form. y = 3x – 1 m = b = Your y-intercept can be written as an ordered pair.
- 12. Graphing with slope-intercept form. y = x – 3 m = b = You try! y = -1/2x + 2 m = b =
- 13. Homework

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