1. Review
Plot the points and then draw a best fit line. Find an equation for your line. What kind of correlation pos., neg., no? X Y 5
6.8
5.4
5.8 6
5.6
6.14
5.2
4.3
7.2
3.5

2. 5.5 slope-point form

3. Formula Point-slope formula: 𝑦 −𝑦1=𝑚(𝑥 −𝑥1) Slope: 𝑦−𝑦 𝑥−𝑥 Find slope
(2,4) (3,10)

4. Find the slope of the points
(-4,-2) (-1,4)
(2,5) (-2,-3)

5. Write equation in point slope form of line

6. Write equation in point slope form of line

7. Write equation given point and slope
(2,5), m = 3
(1,4), m = 2

8. Write equation given point and slope
(1,1), m = 0
(-2,0), m = 1/2

9. Write equation given two points, T/ST
(0,0) (1,5)
(2,3) (4,7)

10. Word Problem
It costs $2 per day to place a one-time ad in the classifieds plus a flat fee. One day costs $3 and four days costs $9.
Write linear equation that gives cost in dollars of the number of days the ad appears
Find the cost of a 6 day ad.

11. Word Problem
You’re driving from Grand Rapids to Detroit. You leave GR at 4. At 5 you pass through a distance of 65 miles.
Write equation that gives distance in terms of time. Let t represent the number of minutes since 4.
Approximately what time should you arrive in Detroit 150 miles from GR.

12. Wrap up
Questions/Comments
Hw: text pg. 303, #’s: evens, 62, 63