anonymous
  • anonymous
***Fan and Medal***
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Sal's Sandwich Shop sells wraps and sandwiches as part of its lunch specials. The profit on every sandwich is $2 and the profit on every wrap is $3. Sal made a profit of $1,470 from lunch specials last month. The equation 2x + 3y = 1,470 represents Sal's profits last month, where x is the number of sandwich lunch specials sold and y is the number of wrap lunch specials sold.
anonymous
  • anonymous
2)Describe how you would graph this line using the slope-intercept method. Be sure to write using complete sentences. 3)Write the equation in function notation. Explain what the graph of the function represents. Be sure to use complete sentences. 4)Graph the function. On the graph, make sure to label the intercepts. You may graph your equation by hand on a piece of paper and scan your work or you may use graphing technology.
anonymous
  • anonymous
(i really need help on this) @Michele_Laino please please please help me!!

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anonymous
  • anonymous
idk how sorry
anonymous
  • anonymous
you know someone how can help me? @Skielerlucas04
anonymous
  • anonymous
anonymous
  • anonymous
@campbell_st help please please!!!
anonymous
  • anonymous
@yomamabf can you help me? please!!!
anonymous
  • anonymous
@Lady.Liv1776
campbell_st
  • campbell_st
well there a few things to consider... this is a 1st quadrant graph so find the y- intercept by letting x = 0 and solving for y so you need to solve 3y = 1470
anonymous
  • anonymous
|dw:1437595835619:dw|
anonymous
  • anonymous
campbell_st
  • campbell_st
next you need to find the slope of the line 2x+3y = 1470 so 3y = -2x + 1470 then divide by 3 and you get \[y = -\frac{2}{3}x + 490\] so starting at the y- intercept, go right 3 units and down 2 units or some multiply of that say 30 right and 20 down |dw:1437595773582:dw| then draw a line
campbell_st
  • campbell_st
that's correct for the y-intercept
anonymous
  • anonymous
so whats nexts?
anonymous
  • anonymous
what i need to do i see you solve everything
campbell_st
  • campbell_st
in function notation its just \[f(x) = -\frac{2}{3} x + 490\]
anonymous
  • anonymous
so we done with the first question?
campbell_st
  • campbell_st
so what this is saying is that as the number of sandwiches increases the number of wraps decreases. so for every 30 sandwiches sold the wraps are decreasing by 20
campbell_st
  • campbell_st
to graph the function you already have the y-intercept so then find the x-intercept and let y = 0 so you need to solve 2x = 1470 hope it makes sense
anonymous
  • anonymous
campbell_st
  • campbell_st
that's correct, so make the x intercept and draw a line between the y-intercept and the x- intercept.
anonymous
  • anonymous
@zufari already did
anonymous
  • anonymous
campbell_st
  • campbell_st
that's correct
anonymous
  • anonymous
thank you @campbell_st can we move to the question number 3? please
campbell_st
  • campbell_st
I posted a solution to 3 and 4 above...
anonymous
  • anonymous
really? i dont see ;/
anonymous
  • anonymous
|dw:1437597260688:dw|
anonymous
  • anonymous
its that the answer for number 4 right? @campbell_st
campbell_st
  • campbell_st
look for the function notation... above... and there is an explanation there as well well remember the graph is 1st quadrant... as you can't make a negative number of sandwiches or wraps...

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