1. Algebra 1
Ch.6 Notes Page 47
P Scatter Plots and Equations of Lines

2. Calculate Slope (m) - Calculate Y-Intercept (b)
Finding Equations from two points.
Calculate Slope (m) - Calculate Y-Intercept (b)
y = mx + b
(3, 2) and (5, 8)
(-4, 6) and (-2, 8)

3. Writing Equations of Trend Lines
Use data points to make a Scatter Plot
Draw in a Trend Line
Use the two points to write the equation of the line.
Two Points on the Trend Line
are (14, 30) and (24, 48)
Predict the wingspan of a hawk that is 28in long.

4. 5 Calories and Fat Graph the data below. Draw the trend line.
Write the equation of the Trend Line.
Estimate the number of Calories if a food has 14g of fat.
Calories and Fat
Fat (g) 6 7 10 19 20 27 36
Calories
276
260
220
338
430
550
633 5
100

5. Graphing Calculator
Regressions

6. Graphing Calculator Calories and Fat 6 7 10 19 20 27 36 276 260 220
Fat (g) 6 7 10 19 20 27 36
Calories
276
260
220
338
430
550
633

7. Graphing Calculator Golf Example 100 102 103 101 105 99 257 264 274
Club-head speed, mph (x)
100
102
103
101
105 99
Distance, yards (y)
257
264
274
266
277
263
258
275