## Zombii 3 years ago Write an equation in point-slope form for the line that passes through one of the following pairs of points (you may choose the pair you want to work with). Then, use the same set of points to write the equation in standard form and again in slope-intercept form. (5, 1), (–3, 4)

1. karatechopper

Ok. Well lets start by asking you this, do you know how to find the slope between two points?

2. Zombii

No not exactly..

3. savvers

ok first off we need to use y2-y1/x2-x1 and its easy to figure out using it

4. Zombii

Ok. Thanks, I'll try to figure this out.

5. savvers

and that formula is used to find out the slope

6. laihei

This one will be a negative slope as well.

7. savvers

point slope form is y-y1=m(x-x1) but we have to figure out the slope intercept form first for this one

8. savvers

and then when you got both of these 2 then its easy to figure out standard form

9. Zombii

would the fraction be 2/5?

10. savvers

let me check

11. savvers

umm no its going to be -3/8

12. Zombii

How did you solve that?

13. savvers

using y2-y1/x2-x1

14. Zombii

Ok, I got it now.

15. Zombii

So now what?

16. savvers

now we have the slope we figure out slope intercept form and you have to use graph paper for that

17. savvers

plot both points and run a line through them

18. savvers

and slope-intercept form is y=mx+b where m is the slope and b is the y intercept

19. Zombii

Can you help me out with that please?(:

20. savvers

use graph paper and see what you get :)

21. Zombii

How do I graph it?

22. savvers

ok take a peice of graph paper and make a large "+" in it and number the lines with 1's or 2's

23. Zombii

Ok

24. savvers

but if number it with 1's you have to go like this 1,2,3,4,5 and so on and with 2's: 2,4,6,8 and so on

25. Zombii

Got it

26. savvers

like this

27. Zombii

Ok I drew one.

28. savvers

now did you plot both points on the graph?

29. Zombii

Yes

30. savvers

now go through the line until you see the line go through the "y" line

31. savvers

x is the horizontal line on the "+" and y is vertical line of the "+"

32. Zombii

It passes through the Y line at 3.

33. savvers

yep

34. savvers

now you got your slope intercept form and point slope form: y=-3/8x+3 and y-1=-3/8(x-5)

35. savvers

now standard form is left

36. savvers

well i got to go i hope you can figure this out