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Oliga [24]
3 years ago
5

Giselle has a catering business. There is a proportional

Mathematics
1 answer:
Vanyuwa [196]3 years ago
6 0

Answer:

1) The graph labeled and the ordered pairs plotted are shown in the second picture.

2) To calculate the amount of meat (in pounds) needed for a party of 75 people:

Substitute the value of the Constant of proportionality and x=75 into the equation y=kx and then evaluate ​(The result is 30 pounds).

Step-by-step explanation:

<h3> The missing graph is attached.</h3>

Proportional relationships have the following form:

y=kx

Where "k" is the Constant of proportionality.

1) You can observe in the graph  shown in the first picture this point:

(10,4)

So you can subsitute the coordinates of this point into  y=kx and solve for "k":

 4=k(10)\\\\k=\frac{4}{10}\\\\k=\frac{2}{5}

Now you can find the amount of meat needed for 20, 30, 40, and 50 people with this procedure:

<u>For 20 people</u>

Substituting k=\frac{2}{5} and x=20 into the equation y=kx and evaluating, you get:

y=(\frac{2}{5})(20)=8

The ordered pair is:

(20,8)

<u>For 30 people</u>

Substituting k=\frac{2}{5} and x=30 into the equation y=kx and evaluating, you get:

y=(\frac{2}{5})(30)=12

The ordered pair is:

(30,12)

<u>For 40 people</u>

Substituting k=\frac{2}{5} and x=40 into the equation y=kx and evaluating, you get:

y=(\frac{2}{5})(40)=16

The ordered pair is:

(40,16)

<u>For 50 people</u>

Substituting k=\frac{2}{5} and x=50 into the equation y=kx and evaluating, you get:

y=(\frac{2}{5})(50)=20

The ordered pair is:

(50,20)

Knowing those values of "y"and having the ordered pairs, you can finish labeling the graph an plotting the ordered pairs (See the second picture.).

2) Substituting k=\frac{2}{5} and x=75 into the equation y=kx and evaluating, you can calculate the amount of meat (in pounds) needed for a party of 75 people.​ This is:

y=(\frac{2}{5})(75)=30

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