1. Bell Ringer Calculate the average of the following list of numbers. 10 15 589 What did you do over thanksgiving?

2. Objective I can solve one step equations. I can find the midpoint of a line.

3. What are equations? X + 19 = 27 We are trying to solve for X Variable- representing what we are trying to solve for.

4. To solve: Use the opposite operation to solve: + then use – - then use + (x) or # next to a variable ÷ ÷ or / then use x

5. Example X – 15 = 12 +15 +15 X + 5 = 37 - 5 - 5 3x= 36 ÷3 ÷3 x/4 = 6 *4 *4 27 32 12 24

6. Midpoint- the half way point between two points on a line. Half way between 0 and 4 would be 2. Using a formula, how could we calculate this? Midpoint of a line

7. Midpoint = (x + y ) ÷2 Example (4 + 0) = 4 4 ÷ 2= 2 The midpoint is 2 Midpoint formula

8. Midpoint with negative numbers Find the Midpoint (2 + -4) = -2 ÷ 2 =-1

9. Practice