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anonymous

  • one year ago

help me please!!!! y= -2/3x +400 Describe how you would graph this line using the slope-intercept method.

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  1. anonymous
    • one year ago
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    It's best to start off with the two axis intercepts. You already know one just by reading this equation, the y-axis.

  2. anonymous
    • one year ago
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    The y axis is (0, 400)

  3. anonymous
    • one year ago
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    so the slope is rise over run and 400 is the y intercept.

  4. anonymous
    • one year ago
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    Yes, and solve for the x-axis by settings y = 0 = -2/3x + 400

  5. anonymous
    • one year ago
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    \[\frac{ 2 }{ 3 } x = 400\]

  6. anonymous
    • one year ago
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    So the x-axis is (600, 0)

  7. anonymous
    • one year ago
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    Connect your x-axis with your y-axis, and extend both ends of the line to the edge of your graph. You're done!

  8. anonymous
    • one year ago
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    3 Write the equation in function notation. Explain what the graph of the function represents. Be sure to use complete sentences.

  9. anonymous
    • one year ago
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    @math1234

  10. anonymous
    • one year ago
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    Functional notation means that you express y in terms a function of x.

  11. anonymous
    • one year ago
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    \[f(x) = -\frac{ 2 }{ 3 } x + 400\]

  12. anonymous
    • one year ago
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    |dw:1435179760642:dw| start at 400 go down two over three

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