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Minchanka [31]
3 years ago
9

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. Change the equation to slope-intercept form. Identify the slope and y-intercept of the equation. Be sure to show all your work. Describe how you would graph this line using the slope-intercept method. Be sure to write using complete sentences. Write the equation in function notation. Explain what the graph of the function represents. Be sure to use complete sentences. 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. Suppose Sal's total profit on lunch specials for the next month is $1,593. The profit amounts are the same: $2 for each sandwich and $3 for each wrap. In a paragraph of at least three complete sentences, explain how the graphs of the functions for the two months are similar and how they are different. Below is a graph that represents the total profits for a third month. Write the equation of the line that represents this graph. Show your work or explain how you determined the equations.

Mathematics
1 answer:
zhenek [66]3 years ago
4 0
Slope intercept form is y=mx+b
m=slope
b=y intercept

changing 2x+3y=1470 to sloepe intercept form is solving for y
minus 2x both sides and dvide by 3
y=\frac{-2}{3}x+490

the slope is -2/3
the y intercept is y=490 or the point (0,490)
to graph it, I would start at the origin and go up 490 units on the y axis and put a point there
then go -2 units up (2 down) and 3 to the right and put a point there
then connect the 2 points with a line


the graph represents the possible x and y values so tha tthe profit is 1470

in function notation, replace y with f(x) to get
f(x)=\frac{-2}{3}x+490
graph below
intercepts labeled


2x+3y=1593
they are similar because they have the same slope
the equation is y=\frac{-2}{3}x+531

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