1. Find the slope and y-intercept of the line 6x – 3y = 7

3. m = 4/33 4

4. Let’s start with the slope formula… m

5. Let’s start with the slope formula…

6. Let’s start with the slope formula…

7. Let’s start with the slope formula…

8. Let’s start with the slope formula…

9. Let’s start with the slope formula… Point-Slope form

10. Write an equation of a line containing the point (1,2) with slope of –½ (x1,y1) = (1,2) m = - ½ y – y1 = m(x – x1) y – 2 = - ½( x – 1) y – 2 = - ½ x + ½ +2 +2

11. Write an equation of the line containing the points (-2,2) and (3,7) Find the slope: m = 1 (x1, y1) = (-2, 2) y – 2 = 1 ( x – (-2)) y – 2 = x + 2 y = x + 4 (3,7) (-2,2)

12. Write an equation of the line through (6, -5) that is perpendicular to What do we know? We know a point on our line: (6, -5) Do we know the slope of our line? NO Do we know anything about the slope of our line? Our line is perpendicular to So its slope is the opposite reciprocal of ?

13. Write an equation of the line through (6, -5) that is perpendicular to using point-slope: y – (-5) = (x – 6) y + 5 = x + y = x – m = 15 m┴ =

14. The “Big 3” forms of linear equations