## 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.

1. anonymous

|dw:1328742692731:dw|

2. anonymous

and so on

3. pokemon23

robot girl can you tell Laura I got a headset Thank You :D

4. anonymous

do you know this question

5. anonymous

who robot girl

6. myininaya

$C \ge 45$ 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

chris97 just so you know i'm not sitting at my computer 24/7 okay?

8. anonymous

do you know how to graph it

9. myininaya

yes use what I told you above to graph it

10. anonymous

want to label the axes

11. myininaya

I would let the x axis be the horizontal axis and the y-axis be the vertical axis

12. anonymous

2,4,6,8,10,12,14,16,18,20 by both x and y

13. anonymous

what do you think the slope mind be

14. myininaya

|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

|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

so anyways m=-2/3 and b=15 right?

17. anonymous

yes

18. myininaya

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19. myininaya

|dw:1328744423950:dw| i put a point on the y-axis since we know the y-intercept

20. anonymous

how does it look then

21. myininaya

now i'm going to go down 2 times and go right 3 times

22. myininaya

|dw:1328744464739:dw|

23. myininaya

now i'm going to connect the dots

24. myininaya

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25. myininaya

the graph looks something like that

26. myininaya

but now we have to come back to the inequality part

27. anonymous

do i just keep going with the piont then

28. myininaya

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

by 2/3

30. myininaya

> means we need to shade everything above the line the slope was -2/3 not 2/3

31. anonymous

sorry

32. myininaya

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33. anonymous

ok i under stand now