1. 1
Determining Equations of Lines

2. 2
Determining Equations of Lines
"work backwards" to find the equation of the line, given the following:
I. slope, y­intercept
II. point, slope
Example: (given: slope, y­intercept)
• Find the equation of the line with slope of 2/3 and the y­intercept of ­1.
­ answer in standard form

3. 3
• Find the equation of a line given a slope of ­4 and a y­intercept of ­1,
then graph.

4. 4
Examples: (given: point, slope)
• Find the equation of the line given a point (3, ­2) on the line,
and a slope of ­3/5

5. 5
• Find the slope-intercept form of equation where the line
with a slope ­1/3 passes through the point (­1, 4)

6. 6
• Find the slope-intercept form of equation where the line
with a slope ­1/3 passes through the point (­1, 4)

7. 7
Exercise 13

8. 8
Is (6, 2) on the line given by the equation 2x ­ 3y = 6 ?
Example:

9. 9

10. 10

11. 11

12. 12

13. 13