## surryyy one year ago Analyze the following graph and select the best match for the slope of the graph. 1/3 3 -1/3 -3 https://static.k12.com/eli/bb/1211/4_68960/2_33573_3_68963/bca78d55b205e10e6421f29b50ced960efb88a1b/media/d7d262058af97602d9effa86fbae1a6e32f4b842/mediaasset_1025083_1.gif

1. Nnesha

line is increasing or decreasing ?

2. Nnesha

|dw:1440945121141:dw| if line start from 3rd quadrant to 1st quadrant then line would be increasing

3. surryyy

oh ok

4. Nnesha

|dw:1440945214788:dw| if line start from 2nd quadrant to 4th quadrant then decreasing

5. Nnesha

so now look at the graph tell is it increasing or decreasing ?

6. surryyy

decreasing

7. Nnesha

yes right if line is decreasing then slope would be negative if line is increasing then slope would be positive

8. Nnesha

slope = rise /run |dw:1440945466511:dw| or you can pick two points to find slope

9. Nnesha

pick two points !

10. Nnesha

two points means (x,y)(x,y) two order pair

11. Nnesha

or you can use the formula slope=rise/run to find slope how many units it's going down from the y-intercept and then left ? |dw:1440945748106:dw|

12. Nnesha

|dw:1440945823245:dw| y-intercept is point where line cross y-axis

13. surryyy

2?

14. Nnesha

hmm no try again |dw:1440945961436:dw|

15. surryyy

3

16. Nnesha

hmm no well let's pick two points |dw:1440946053472:dw| i put 2 red dots what are the x's and y''s values there ?

17. Nnesha

x comes first and then y (x,y)

18. surryyy

(1,2)?

19. Nnesha

|dw:1440946397796:dw| it should be (1,-1) remember y values are negative in 4th quadrant

20. Nnesha

what bout the 2nd dot ?

21. Nnesha

dot is on the y-axis thats mean x values would be 0 (0,?) y = ?

22. surryyy

(0,2)?

23. Nnesha

yes looks good now use the slope formula to find slope (0,2)(1,-1) $\huge\rm \frac{ y_2 -y_1 }{ x_2 -x_1 }$

24. surryyy

it would be -3?

25. Nnesha

yes right!

26. surryyy

thnx

27. Nnesha

np