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hali12

Please help.... Will give medal for best anwser....

  • one year ago
  • one year ago

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  1. hali12
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    • one year ago
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  2. mathteacher1729
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    What is the slope of the line?

    • one year ago
  3. hali12
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    idk?

    • one year ago
  4. hali12
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    4, 1 & 1/2

    • one year ago
  5. mathteacher1729
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    Not quite.. I'm not sure how you are getting those numbers.

    • one year ago
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  6. hali12
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    idk how to do this math :/

    • one year ago
  7. ZakaullahUET
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    |dw:1350139808849:dw| y=mx+b is the slope intercept form put values in it

    • one year ago
  8. mathteacher1729
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    Slope-intercept is basically a very short way of describing ANY straight line. It can be super useful in figuring out, say, how much money you make if you get paid an hourly wage.

    • one year ago
  9. mathteacher1729
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    The slope is "rise over run" or the ratio (fraction) of how far up or down the line goes for every bit it moves left or right.

    • one year ago
  10. mathteacher1729
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    In this case, for every "rise" of negative 3 (going down three) the line goes one to the right.

    • one year ago
  11. hali12
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    so -3, 1?

    • one year ago
  12. mathteacher1729
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    So slope = -3/1. Slope = -3 (because any number divided by 1 is itself).

    • one year ago
  13. hali12
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    well -3 / 1

    • one year ago
  14. mathteacher1729
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    Yup, that's the slope.

    • one year ago
  15. hali12
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    thanks.. (:

    • one year ago
  16. mathteacher1729
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    Now the INTERCEPT just means "what value of y does this line cross the y-axis" the intercept is literally JUST A NUMBER. :)

    • one year ago
  17. hali12
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    4

    • one year ago
  18. mathteacher1729
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    So look at your picture. What value of y does the line cross (or touch, or intercept, they all mean the same thing) the y-axis?

    • one year ago
  19. mathteacher1729
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    Yup! :D

    • one year ago
  20. hali12
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    yay!

    • one year ago
  21. mathteacher1729
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    The slope intercept form of a line is y = mx + b where m is the slope (-3) and b is the intercept (4). Literally re-write that but instead of m write -3 and instead of b write +4 and you're done. :)

    • one year ago
  22. hali12
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    so, 4=-3x +4?

    • one year ago
  23. hali12
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    or y=-3x+4?

    • one year ago
  24. mathteacher1729
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    The second one.===> y=-3x+4 The crazy thing is... that describes the ENTIRE line. All the points on the line obey that equation. Question -- what is the value of Y on the line when X = 2? (look at your picture)

    • one year ago
  25. hali12
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    uh...

    • one year ago
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