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alyxxx101

what is the slope of the line that passes through (-3,2) and (1,2)?

  • one year ago
  • one year ago

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  1. heathernelly
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    use m=(y2-y1)/(x2-x1)

    • one year ago
  2. whpalmer4
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    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.

    • one year ago
  3. alyxxx101
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    I did. But i'm not sure if my answer is correct...

    • one year ago
  4. whpalmer4
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    Okay, show your work and we'll check it for you.

    • one year ago
  5. whpalmer4
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    I'll give you a hint: look at the y-values.

    • one year ago
  6. alyxxx101
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    |dw:1360351189497:dw|

    • one year ago
  7. heathernelly
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    what did you get as your answer?

    • one year ago
  8. alyxxx101
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    i got 4

    • one year ago
  9. alyxxx101
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    Am i way off?

    • one year ago
  10. heathernelly
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    the answer is 0 because 0/4 can't be 4

    • one year ago
  11. whpalmer4
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    0 divided by 4 is 4?

    • one year ago
  12. alyxxx101
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    Oh okay. I see. So the answer to that problem is 0 then?

    • one year ago
  13. alyxxx101
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    How does that work though? Can you please show me?

    • one year ago
  14. heathernelly
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    yes

    • one year ago
  15. alyxxx101
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    Ok thanks! :)

    • one year ago
  16. whpalmer4
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    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.

    • one year ago
  17. heathernelly
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    |dw:1360351384095:dw|

    • one year ago
  18. whpalmer4
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    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.

    • one year ago
  19. alyxxx101
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    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?

    • one year ago
  20. whpalmer4
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    Yes, the answer is 0. The line is horizontal, because for each point, the y value is the same.

    • one year ago
  21. alyxxx101
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    Oh okay! That makes sense now

    • one year ago
  22. heathernelly
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    yes the answer is 0! :)

    • one year ago
  23. whpalmer4
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    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.

    • one year ago
  24. alyxxx101
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    Oh alright. Thanks a ton you guys! I really appreciate it! :)

    • one year ago
  25. heathernelly
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    np!

    • one year ago
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