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.

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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

5.5 slope-point form

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

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

Write equation in point slope form of line

Write equation in point slope form of line

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

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

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

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.

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.

Wrap up Questions/Comments Hw: text pg. 303, #’s: 18-38 evens, 62, 63