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ewokkman1

  • 4 years ago

Which is the slope and y-intercept of the following equation? y = 8x + 1

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  1. Chlorophyll
    • 4 years ago
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    Do you know slope y -intercept formula?

  2. ewokkman1
    • 4 years ago
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    no, unfortuanately.

  3. Chlorophyll
    • 4 years ago
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    Please look it up, so you can learn!

  4. brinethery
    • 4 years ago
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    Paul is God. He got me through calculus, so I'm sure he can get you through algebra. Read through this whole section, you'll learn a lot. http://tutorial.math.lamar.edu/Classes/Alg/Lines.aspx

  5. Chlorophyll
    • 4 years ago
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    Brinet comes to rescue you :)

  6. brinethery
    • 4 years ago
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    Chlor, you can still answer, I just wanted to pass on these notes. They are awesome.

  7. ewokkman1
    • 4 years ago
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    thanks ill read these and see if they help

  8. Chlorophyll
    • 4 years ago
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    Just give me any idea about slope!

  9. brinethery
    • 4 years ago
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    @ewokkman1, your y-intercept will be when x=0. Look at any graph and you can understand this visually. So plug x=0 into your equation and see what you get.

  10. ewokkman1
    • 4 years ago
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    so the y-intercept will =9?

  11. brinethery
    • 4 years ago
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    What is 8*0?

  12. ewokkman1
    • 4 years ago
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    0

  13. brinethery
    • 4 years ago
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    y = 8*0 +1

  14. ewokkman1
    • 4 years ago
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    oh...... i think i understand it. So my y-intercept would would equal 1

  15. brinethery
    • 4 years ago
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    Yup! :-)

  16. brinethery
    • 4 years ago
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    And if you ever have it where it's not in y=mx+b form, first step is to always always always get it in that form. No coefficient next to the y. Make sure y is by itself. You'll understand more when you read through those notes, they explain it really well.

  17. brinethery
    • 4 years ago
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    So what is "m" in your case?

  18. ewokkman1
    • 4 years ago
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    8

  19. brinethery
    • 4 years ago
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    Yep. And if you want to graph the line by starting at a given point, you want to move up 8 in the positive direction, and over 1 in the positive direction. They don't really specify this, but it's implied. m= 8/1 = 8. That helps if you don't feel like plugging in another point but just graphing the function. If it's -8, then that mean move down 8 in the negative direction and over 1 in the positive direction.

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