1. Precalculus Sec 1.3 Find the equation of a given line Telephone Bill TimeCost 10.65 20 1.15 8.55 35 1.90

2. Forms of a linear equation 1. General Ax + By = C 2.Slope-intercept y = mx + b 3.Point Slope y - y 1 = m(x – x 1 ) 4.Horizontal y = c 5. Vertical x = c Find the equation of the line that contains (4,-1) and has a slope of 2. Slope = -A/B Slope = m y intercept = b m = slope (x 1, y 1 ) = point on line

3. Find the equation of the line with a y intercept of 6 and parallel to the line 6x – 2y = 9

4. Find the amount of time you can talk on the phone for $20. Telephone Bill Time Cost 10.65 20 1.15 8.55 35 1.90

5. Find the equation of the perpendicular bisector of the line segment joining the points (7,9) and (3,-1).

6. assignment Page 16 Problems 1 – 16 not ÷ 3 22 e.c.