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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- anonymous

|dw:1328742692731:dw|

- anonymous

and so on

- pokemon23

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

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## More answers

- anonymous

do you know this question

- anonymous

who robot girl

- 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

- myininaya

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

- anonymous

do you know how to graph it

- myininaya

yes use what I told you above to graph it

- anonymous

want to label the axes

- myininaya

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

- anonymous

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

- anonymous

what do you think the slope mind be

- 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?

- 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

- myininaya

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

- anonymous

yes

- myininaya

|dw:1328744403682:dw|

- myininaya

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

- anonymous

how does it look then

- myininaya

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

- myininaya

|dw:1328744464739:dw|

- myininaya

now i'm going to connect the dots

- myininaya

|dw:1328744508700:dw|

- myininaya

the graph looks something like that

- myininaya

but now we have to come back to the inequality part

- anonymous

do i just keep going with the piont then

- myininaya

we have y>=-2x/3+15
we already took care of the equal part
now we need to look at greater than part

- anonymous

by 2/3

- myininaya

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

- anonymous

sorry

- myininaya

|dw:1328744607235:dw|

- anonymous

ok i under stand now

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