## alyxxx101 Group Title what is the slope of the line that passes through (-3,2) and (1,2)? one year ago one year ago

• This Question is Open
1. heathernelly Group Title

use m=(y2-y1)/(x2-x1)

2. whpalmer4 Group Title

Slope is the rise over the run. How many units up (or down) does the line go when you move 1 unit right or left? Formula: $m= \frac{(y_2-y_1)}{(x_2-x_1)}$ where $$(x_1,y_1), (x_2,y_2)$$ are the points.

3. alyxxx101 Group Title

I did. But i'm not sure if my answer is correct...

4. whpalmer4 Group Title

Okay, show your work and we'll check it for you.

5. whpalmer4 Group Title

I'll give you a hint: look at the y-values.

6. alyxxx101 Group Title

|dw:1360351189497:dw|

7. heathernelly Group Title

8. alyxxx101 Group Title

i got 4

9. alyxxx101 Group Title

Am i way off?

10. heathernelly Group Title

the answer is 0 because 0/4 can't be 4

11. whpalmer4 Group Title

0 divided by 4 is 4?

12. alyxxx101 Group Title

Oh okay. I see. So the answer to that problem is 0 then?

13. alyxxx101 Group Title

How does that work though? Can you please show me?

14. heathernelly Group Title

yes

15. alyxxx101 Group Title

Ok thanks! :)

16. whpalmer4 Group Title

Yes. That's why I suggested looking at the y values. If the y values are identical, the line is horizontal. If the x values are identical, the line is vertical.

17. heathernelly Group Title

|dw:1360351384095:dw|

18. whpalmer4 Group Title

It's good to have an intuitive understanding of what slope means. Positive slope means it goes up as you move to the right. Negative slope means it goes down as you move to the right. Slope > 1 means it goes up more than 1 unit for every unit you move on the x axis. Slope < 1 (but > 0) means it goes up less than 1 unit for every unit you move on the x axis.

19. alyxxx101 Group Title

what is the slope of the line that passes through (-3,2) and (1,2)? so to this problem...my answer is going to be 0 then?

20. whpalmer4 Group Title

Yes, the answer is 0. The line is horizontal, because for each point, the y value is the same.

21. alyxxx101 Group Title

Oh okay! That makes sense now

22. heathernelly Group Title

yes the answer is 0! :)

23. whpalmer4 Group Title

It's really worth practicing finding the slope and seeing what different slopes look like; having a feel for that will save you time and prevent wrong answers in the future. Use a pair of dice to make up points, plot lines between them, and find the slope.

24. alyxxx101 Group Title

Oh alright. Thanks a ton you guys! I really appreciate it! :)

25. heathernelly Group Title

np!