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Can someone just explain how to write the system of equations, and then how to graph it?
Currently, Jodi has a collection of 44 CDs and Veronica has a collection of 22 CDs. Jodi is adding 2 CDs per month to her collection; Veronica plans to add 4 CDs per month.
a. Write a system of equations for this situation. Explain your method.
b. Graph the system of equations. Describe your graph.
c. In how many months will they have the same number of CDs? What will be the number of CDs? Explain how you found the answer.
d. At the end of 2 months, who will have more CDs?
 one year ago
 one year ago
Can someone just explain how to write the system of equations, and then how to graph it? Currently, Jodi has a collection of 44 CDs and Veronica has a collection of 22 CDs. Jodi is adding 2 CDs per month to her collection; Veronica plans to add 4 CDs per month. a. Write a system of equations for this situation. Explain your method. b. Graph the system of equations. Describe your graph. c. In how many months will they have the same number of CDs? What will be the number of CDs? Explain how you found the answer. d. At the end of 2 months, who will have more CDs?
 one year ago
 one year ago

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Brittni0605Best ResponseYou've already chosen the best response.1
Let's let J represent Jodi's collection Let's let V represent Veronica's collection
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
What I had was: Let J represent Jodi, V represent Veronica, and x = the number of months. J = 44 + 2x V = 22 + 4x
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Ok. So then how do I graph that? My teacher said that we're supposed to use a graphing calculator.
 one year ago

Brittni0605Best ResponseYou've already chosen the best response.1
Do you have a graphing calc?
 one year ago

whpalmer4Best ResponseYou've already chosen the best response.0
Well, enter the two equations in your calculator and have it graph them. The point where they intersect is the point where they have the same number of CDs. If you drop a vertical line to the xaxis at that point, you can see how many months it took.
 one year ago

Brittni0605Best ResponseYou've already chosen the best response.1
If so, input J=44+2x for y1 and V=22+4x for y2
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Yes I have a graphing calculator. So put in J=44+2x for y1 and V=22+4x for y2?
 one year ago

whpalmer4Best ResponseYou've already chosen the best response.0
I'm an old codger, I've never used one of those newfangled contraptions, so I can't advise you on the details of which buttons to push :)
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Ok, thanks though :)
 one year ago

Brittni0605Best ResponseYou've already chosen the best response.1
Yes, you are right @horsealot203
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Ok, so after I put in J=44+2x for y1 and V=22+4x for y2 how would I describe the graph?
 one year ago

Brittni0605Best ResponseYou've already chosen the best response.1
Well, one collection is obviously growing faster than the other based off of the slopes of the lines.
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Ok, it looks like Veronica's collection is growing faster.
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
So for part c for in how many months they will have the same number of cds, that would be where the two line intersect right? So would I use the number on the y axis for the number of months right?
 one year ago

Brittni0605Best ResponseYou've already chosen the best response.1
That will be where your lines intersect. But your y axis is representing the number of CD's. The x axis is your months
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Or would the y axis be the number of cds, and the x axis the number of months?
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Oh, ok, I just saw your reply. Ok, thanks!
 one year ago

horsealot203Best ResponseYou've already chosen the best response.0
Oh, and this is a different question, but how do you give medals for responses?
 one year ago

Brittni0605Best ResponseYou've already chosen the best response.1
There's a blue box next to ppl's usernames that says 'best response'..just click the box next to the username you want the medal to go to
 one year ago
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