1. Open Learning Logs GO TO A NEW PAGE AND WRITE “MP3” FILLING THE TOP MARGIN On 1 st Line… Date on Left…Section 7 – 1 on right

2. Warm – Up Section 7 – 1 The word “slope” occurs in various contexts. Write as many different ways you’ve heard the word slope used/defined. Example – ski slope

3. Chapter 7 Unit Question What are the components and applications of lines on the coordinate plane?

4. Section 1 How is the slope of a line through two given points found?

5. Homework Clicky

6. Slope Definition Through two points on the coordinate plane In Words… The difference in the y’s divided by the difference in the x’s and The slope is calculated by

7. Calculate the Slope… ( 1, 2 ) and ( 2, 6 )( 3, 1 ) and ( -5, 7 )( -4, 6 ) and ( 3, 6 ) Zero Slope Horizontal line ( 2, 1 ) and ( 2, 4 ) Undefined Slope Vertical line ERROR Positive Slope Increasing line Negative Slope Decreasing line

8. Zero Slope Horizontal line Undefined Slope Vertical line Positive Slope Increasing line Negative Slope Decreasing line

9. Are the three points on the Same Line??? ( 1, 1 ), ( 2, 2 ), ( 3, 3 ) If the slopes between two unique pairs are the same, the answer is YES! Otherwise, NO! Pick a pair and find the slope… ( 1, 1 ) and ( 2, 2 ) Pick a different pair and find the slope… ( 2, 2 ) and ( 3, 3 )

10. Graph and Find Slope… 0 1 2 3 3 2 1 0 YX

11. If points ( 2, y ) and ( 4, 8 ) are on the same line, find y if the slope is 3. Hint: Use the Slope formula and fill in what you know Gush!

12. Homework Do HoffmaSheet 7 – 1