## veeebeetwee 2 years ago sum1 help with my test asap Write the equation of a line in slope-intercept form that has a slope of -2 and passes through the point (2, -8). (Points : 2) y = -2x - 4 y = -2x - 8 y = -2x + 18 y = -2x – 12

1. veeebeetwee

@Dido525

2. Dido525

Helping you on a test is something we cannot do here.

3. veeebeetwee

its not relly test but its long like a test i jus thought if i sid test ppl wouldctuallly help me

4. veeebeetwee

@Dido525

5. veeebeetwee

@AriPotta heyycan u help plz

6. veeebeetwee

7. AriPotta

put the information into pint-slope form first

8. AriPotta

point-slope*

9. veeebeetwee

y=mx+b?

10. AriPotta

that's slope-intercept form

11. AriPotta

point-slope is y - y1 = m(x - x1)

12. AriPotta

what do you get after putting the info in?

13. veeebeetwee

so y-8=-2(x-2)?

14. AriPotta

y + 8 = -2(x - 2)

15. veeebeetwee

y+8=-2x+4?

16. AriPotta

yes, and now "solve for y" to get it into slope-intercept form

17. veeebeetwee

18. AriPotta

what did you do wrong?

19. veeebeetwee

oh nvm so it would = y=-2x-4 bc u add 8

20. AriPotta

yes

21. veeebeetwee

ok wat about this one Rewrite the equation of a line in point-slope form to slope-intercept form:

22. veeebeetwee

23. veeebeetwee

@AriPotta

24. AriPotta

no need to tag me, i'm right here ;)

25. veeebeetwee

:)

26. AriPotta

right now it's in point-slope form. so do the same thing we did to the last one for this one

27. veeebeetwee

y-3 wait its a fraction idk wat to do those confudse me

28. AriPotta

for the last one, we distributed, correct? just do the same thing with this one. 1/2 times x is 1/2x and 1/2 times -8 is..?

29. veeebeetwee

1/2-8?

30. AriPotta

no. :/ what's half of 8?

31. veeebeetwee

oh 4

32. AriPotta

-4

33. veeebeetwee

oh yea

34. AriPotta

continue.

35. veeebeetwee

=1/-2?

36. AriPotta

ok. let's take this by steps starting with what we started with y - 3 = 1/2(x - 8) y - 3 = 1/2x - 4

37. AriPotta

we need to continue to get into slope-intercept

38. AriPotta

one step left

39. veeebeetwee

+3 n +3 so y=1/2+1

40. veeebeetwee

-1!

41. AriPotta

yes, y = 1/2x - 1

42. veeebeetwee

ok wat about this one now 2. Write the equation of a line in slope-intercept form passing through (4, 5) and (6, 8)

43. AriPotta

44. AriPotta