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S lope-Intercept Formula 1

S lope-Intercept Formula 1. GOAL. Given a line, write a slope-intercept equation. Slope-Intercept Form. We need two things, can you guess what they are? Slope Y-intercept. Equation!. m = Slope Remember: b = y-intercept The place where the line crosses the y-axis. Also, when x=0.

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S lope-Intercept Formula 1

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  1. Slope-Intercept Formula1

  2. GOAL • Given a line, write a slope-intercept equation.

  3. Slope-Intercept Form • We need two things, can you guess what they are? Slope Y-intercept

  4. Equation!

  5. m = Slope Remember: b = y-intercept The place where the line crosses the y-axis. Also, when x=0

  6. Example 1 Identify the slope and y-intercept. • Slope=2 • y-intercept=-10

  7. You try! • Slope and y-intercept?

  8. Example 2 Find y when x=3. What do we do? Plug 3 in for x. So: The point (3,-4) is on the line .

  9. You try! Find y when x=3 Answer: (3,0)

  10. Example 3 Slope and y-intercept? Slope = 1 Intercept = 0.

  11. Example 4 • Sometimes you will need to solve for y first to get it in the form y=mx+b. Slope = -2 Intercept = 9

  12. Remember Is equivalent to

  13. Example 5 • Write an equation of the line. • Slope=? • y=intercept? Answer:

  14. You try!

  15. You try again!

  16. Homework

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