## anonymous one year ago Find the slope of the line passing through the points (–1, 3) and (4, –7). 2 3/4 -4/3 -2

1. anonymous

there are a lot of questions like this on the OS look at them

2. anonymous

Will Fan and Metal

3. anonymous

Sara I wish I could Help But I can't Sorry D:

4. anonymous

Each point is written (x,y). The formula for the slope of a line is $\frac{y _{2}-y _{1}}{x _{2}-x _{1}}$ The little two means it's the y or x-coordinate for the 2nd point you pick.

5. anonymous

Please tell me if you still don't understand

6. anonymous

Could u explain it a little more

7. anonymous

Take the x and y coordinates (first and second number in the parentheses) and plug them into the formula I gave you.

8. kc_kennylau

First point is (-1,3), second point is (4,-7). $\Large\text{slope}=\frac{\text{change in y}}{\text{change in x}}$

9. anonymous

ok what next

10. kc_kennylau

What is the $$\Large\text{change in y}$$?

11. anonymous

3?

12. kc_kennylau

No, that is the $$\Large\text{original y}$$

13. anonymous

I dont understand

14. kc_kennylau

Okay, when we go from the point (-1,3) to (4,-7)

15. kc_kennylau

The y-value changed from 3 to -7, right?

16. anonymous

yea

17. kc_kennylau

Does it make sense to you that $$\Large\text{change in y = new y - original y}$$?

18. kc_kennylau

Let's plug those numbers in

19. anonymous

ok thanks