1. Tuesday, October 12 Today’s Agenda Today’s Agenda 1. Fill in Planner (Practice 2-6-evens) 2. Bell Work (Evaluate each formula for the values given) 1. Distance: d = rt when r = 60 mph and t = 3 h 2. Perimeter of a rectangle: P = 2l + 2w, when l = 11 cm and w = 5 cm 3. Area of a triangle: A = ½ bh, when b = 8 and h =7 3. Grade and Collect Practice 2-5 4. Today’s Objective: SWBAT transform literal equations

2. Vocabulary Literal Equation: An equation involving two or more variables. To transform a literal equation, you solve for one variable in terms of the others. Literal Equation: An equation involving two or more variables. To transform a literal equation, you solve for one variable in terms of the others.

3. How fast did they run? DistanceRateTime 1500 m 4.98 min 800 m 3.08 min 800 m 2.93 min 400 m 1.18 min What if we isolate the r on one side of the equation

4. Example 1: Transform a Geometric Formula Solve the formula for the area of a triangle for the height, h. Multiply both sides of the equation by 2 to get rd of the 1/2 Simplify Divide both sides of the equation by b, to isolate the h simplify

5. Example 2: Transforming Equations Solve y = 5x + 7, for x Subtract 7 from both sides Simplify Divide each side by 5 to isolate the x Simplify

6. Example 3: Transforming equations containing only variables Solve ab-d=c for b Add d to both sides Simplify Divide both sides by a to isolate b.

7. Try a few (in groups) Solve each equation for y

8. Why do we need to know this? 1. Today’s Objective: SWBAT transform literal equations