## anonymous one year ago Choose the equation that represents the graph http://gyazo.com/b7e8866d44be498bdd25e8aaeae856e9 a. y = -2x - 6 b. y = two thirdsx + 6 c. y = -two thirdsx + 6 d. y = 2x + 6

1. anonymous

@Luigi0210

2. AbdullahM

A good graphing calculator: https://www.desmos.com/calculator

3. AbdullahM

Is the slope postive or negative?

4. anonymous

thank you very much mn!

5. anonymous

negative ?

6. AbdullahM

|dw:1434821585095:dw|

7. AbdullahM

Correct :)

8. AbdullahM

That means we can elimate two answer choices, which 2 can we eliminate?

9. Luigi0210

Also, you could look for the slope using the points (0, 6) and (9, 0)

10. anonymous

how so? that confuses me luigi

11. anonymous

b and d

12. Luigi0210

Since it's already in slope intercept form, just look for the m.

13. anonymous

so its either a or c

14. AbdullahM

$$\sf\Large Slope=\frac{y_2-y_1}{x_2-x_1}$$

15. anonymous

oh so just look at the points

16. anonymous

i get it now

17. anonymous

thank you guys for your help!

18. AbdullahM

Plug in x=0 into a or c and see if it gives you the correct y-intercept that is shown in the graph :)

19. anonymous

c?

20. AbdullahM

correct $$\ddot\smile$$

21. anonymous

thank you!

22. AbdullahM

np