anonymous 2 years ago Write an equation in y intercept form of a line that passes through the points (-2,5) and (4,7)

1. anonymous

You have to do this first to find the slope$\frac{ y^2-y^1 }{ x^2-x^1}$

2. anonymous

The slope is 2/9

3. anonymous

How did u get a 9?

4. anonymous

Oh wait nevermind, its 2/6 :)

5. anonymous

I think I got the answer but I'm not sure. Is it y=2/6x+17/3 ?

6. anonymous

ok thats better! :) Next you have to find the equation y=mx+b First plug in the slope for m Then plug in on of the points for x and y Which will make you be able to find b

7. anonymous

I did not get the answer you have

8. anonymous

I checked it again. Thats what I really got

9. anonymous

10. anonymous

Try this$5=-\frac{ 2 }{ 6}(-2)+b$

11. anonymous

The slope isnt -2/6 its 2/6

12. anonymous

Opps the negative is suppose to be there

13. anonymous

The negative IS suppose to be there? in the 2/6 ?

14. anonymous

This is what you should use$5=\frac{ 2 }{ 6 }(-2)+b$

15. anonymous

Yeah, that's what I did. After, I got 5=2/6(-2)+b and then I added 2/3 to both side and got b=17/3

16. anonymous

17. anonymous

b should be$5\frac{ 2 }{ 3 }$ Oh i see what you did, You kept it as a mixed fraction, but yes thats right

18. anonymous

ah okay thanks:)

19. anonymous