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anonymous

  • 4 years ago

lindsey bought 2 pizza and 3 orders of spaghetti from crazy pizza.if she spent at least $45,write an inequailty where x represents the cost of each pizza ,and y represents the cost of each order of spaghetti.graph the solution and label the axes.

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  1. anonymous
    • 4 years ago
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    |dw:1328742692731:dw|

  2. anonymous
    • 4 years ago
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    and so on

  3. pokemon23
    • 4 years ago
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    robot girl can you tell Laura I got a headset Thank You :D

  4. anonymous
    • 4 years ago
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    do you know this question

  5. anonymous
    • 4 years ago
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    who robot girl

  6. myininaya
    • 4 years ago
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    \[C \ge 45\] since we want C to be equal to or more C=2x+3y so we have the inequality \[2x+3y \ge 45\] To graph this I would solve for y then and graph the form y=mx+b first then we will look at graphing the inequality part

  7. myininaya
    • 4 years ago
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    chris97 just so you know i'm not sitting at my computer 24/7 okay?

  8. anonymous
    • 4 years ago
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    do you know how to graph it

  9. myininaya
    • 4 years ago
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    yes use what I told you above to graph it

  10. anonymous
    • 4 years ago
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    want to label the axes

  11. myininaya
    • 4 years ago
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    I would let the x axis be the horizontal axis and the y-axis be the vertical axis

  12. anonymous
    • 4 years ago
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    2,4,6,8,10,12,14,16,18,20 by both x and y

  13. anonymous
    • 4 years ago
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    what do you think the slope mind be

  14. myininaya
    • 4 years ago
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    |dw:1328743835754:dw| so \[2x+3y \ge 45\] Solve this for y subtract 2x on both sides \[3y \ge -2x+45\] then divide both sides by 3 \[y \ge \frac{-2}{3} x+15\] So I told you to graph \[y=\frac{-2}{3}x+15 \] first then we will worry about the inequality part so this is in the form y=mx+b where m=slope and b=y-intercept so what do you think is m and what is b?

  15. anonymous
    • 4 years ago
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    |dw:1328744149997:dw|and all number when it get to 20 both x and y axes but the graph on my paper say that the graph look like this

  16. myininaya
    • 4 years ago
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    so anyways m=-2/3 and b=15 right?

  17. anonymous
    • 4 years ago
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    yes

  18. myininaya
    • 4 years ago
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    |dw:1328744403682:dw|

  19. myininaya
    • 4 years ago
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    |dw:1328744423950:dw| i put a point on the y-axis since we know the y-intercept

  20. anonymous
    • 4 years ago
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    how does it look then

  21. myininaya
    • 4 years ago
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    now i'm going to go down 2 times and go right 3 times

  22. myininaya
    • 4 years ago
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    |dw:1328744464739:dw|

  23. myininaya
    • 4 years ago
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    now i'm going to connect the dots

  24. myininaya
    • 4 years ago
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    |dw:1328744508700:dw|

  25. myininaya
    • 4 years ago
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    the graph looks something like that

  26. myininaya
    • 4 years ago
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    but now we have to come back to the inequality part

  27. anonymous
    • 4 years ago
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    do i just keep going with the piont then

  28. myininaya
    • 4 years ago
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    we have y>=-2x/3+15 we already took care of the equal part now we need to look at greater than part

  29. anonymous
    • 4 years ago
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    by 2/3

  30. myininaya
    • 4 years ago
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    > means we need to shade everything above the line the slope was -2/3 not 2/3

  31. anonymous
    • 4 years ago
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    sorry

  32. myininaya
    • 4 years ago
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    |dw:1328744607235:dw|

  33. anonymous
    • 4 years ago
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    ok i under stand now

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