anonymous one year ago Medal + Fan See Attachment

1. anonymous

2. anonymous

Options are: -3,000 -2,000 2,000 3,000

3. anonymous

the answer would be the slope.

4. anonymous

Do you know the slope formula?

5. anonymous

y-y1=m(x-x1)

6. anonymous

$\frac{ y _{1}^2 - y_{2}^2 }{ x_{1}^2 - x_{2}^2 }$

7. anonymous

ohh that one

8. anonymous

What you put was the point slope formula

9. anonymous

not formula, but more of a form. Anyway, you would pick 2 points on the graph.

10. anonymous

So now this is where I dont know how which is y and x

11. anonymous

Okay ill walk you through. Pick two points.

12. anonymous

oh okay so (0,80,000) and (10,50,000)

13. anonymous

Okay. So our Y's are 80,000 and 50,000. Notice that there is a y1 and x1 and y2 and x2. These correspond, so you cannot randomly put them in whatever order you want. So we will do this 80,000-50,000. Our corresponding x's are 0 and 10, so they go under, as so. $\frac{ 80,000 - 50,000 }{ 0- 10}$

14. anonymous

I just did it and I got 3.. for 3,000

15. anonymous

-3,000 actually because its goin down

16. anonymous

Correct?

17. anonymous

well, you have forgotten one thing. when you subtract 0-10, equals NEGATIVE 10. so it is -3000 like you stated.

18. anonymous

Thank you!

19. anonymous

Np

20. anonymous

You know thats all I have trouble with, finding what formula to use

21. anonymous

do more practice problems, it will help a lot. the more often you start using the right ones in the right situations, you will get better at it.

22. anonymous

okay