## MaeganR 2 years ago #14. Write an equation of a line that has the slope of -1/2 in each form. a. point-slope form b. slope-intercept form

1. MaeganR

@erdog82 @Butterfly16 @chihiroasleaf

2. erdog82

First, I believe you have to decide what points you want to use to get the slope of -1/2

3. MaeganR

|dw:1358117562513:dw|

4. MaeganR

could this help me?

5. erdog82

some points could be (4,-1) (6,-2)

6. MaeganR

so how do i write an equation of a line that has a slope of -1/2 in point-slope form, and slope-intercept form.

7. erdog82

well what is y1

8. MaeganR

-1 ?

9. erdog82

yup, so so far we have y+1= -1/2 x - x1 what is x1?

10. MaeganR

4

11. MaeganR

?

12. erdog82

yup, so then we have y+1=-1/2 x -4

13. MaeganR

thats it for a? we don't have to solve?! now how do we do b? y=mx+b

14. erdog82

what did you have to do for 13 on your last question?

15. MaeganR

what do you mean?

16. erdog82

you have to subtract 1 from -4

17. MaeganR

so its -5

18. erdog82

so then what do you get?

19. MaeganR

-5 ?

20. erdog82

so then its y=-1/2 x - 5

21. erdog82

22. MaeganR

now i have 10 problems of standard form to do and 15 problems to do of parallel and perpendicular lines but i don't want to keep bothering you.

23. erdog82

oh, don't worry, it will help me! I am in "Enriched Algebra" and I just learned that, and I understand it really well - helping you will help me study and practice!