## anonymous 4 years ago need help finding the eqution of my answer

1. anonymous

2. anonymous

what is the slope intercept of (2,2)and (-1,5) what the answer

3. anonymous

So have you seen the slope equation? Because that's what you need. :)

4. anonymous

yes

5. anonymous

i just need help to get the answer for my equation that i can up with y=x

6. anonymous

7. anonymous

y=x

8. anonymous

help me

9. anonymous

No, you're looking for an actual number for this problem. Ok, so the first place to begin is to figure out the actual slope. The equation for slope- intercept is: $y=mx+b$ We're looking for the B piece. So, we need to find m (the slope) first. Then we can use the slope-intercept form to find be.

10. anonymous

Have you done any work with finding slopes of lines before?

11. anonymous

i know that i just need to see if is right

12. anonymous

i got y=x

13. myininaya

no y=x is not right

14. anonymous

15. anonymous

why is my answer not right did i do something wrong

16. myininaya

17. anonymous

ok

18. myininaya

recalculate that

19. myininaya

you shouldn't get 1 but you should get the opposite of 1 for your slope

20. anonymous

didnt know that

21. myininaya

$m=\frac{5-2}{-1-2}=\frac{3}{-3}=-1$

22. anonymous

i got 1 only

23. anonymous

how did u get -1

24. myininaya

-1-2=-3

25. myininaya

3/(-3)=-1

26. anonymous

i did that

27. myininaya

$y-y_1=m(x-x_1)$ $y-y_1=-1(x-x_1)$

28. myininaya

now enter in a point and add y1 on both sides

29. anonymous

30. anonymous

so it is y= -1x

31. myininaya

$(x=2,y=2)$

32. myininaya

enter in this point

33. myininaya

$y-2=-1(x-2)$

34. myininaya

$y-2=-x+2$ now add 2 on both sides

35. anonymous

did that

36. myininaya

y=-x+2+2 y=-x+4

37. anonymous

38. myininaya

that is slope intercept form

39. myininaya

where -1 is the slope and (0,4) is the y intercept

40. anonymous

so it is y= -1x

41. myininaya

no y=-x+4 is what i have