he graph below shows the cost of pens based on the number of pens in a pack. What would be the cost of one pen? A graph is shown

Question

3 years ago

13

he graph below shows the cost of pens based on the number of pens in a pack. What would be the cost of one pen? A graph is shown

with title Purchase of Pens. The horizontal axis label is Number of Pens, and the vertical axis label is Cost in dollars. Points are plotted on the ordered pairs 2, 3.5 and 4, 7 and 6, 10.5. $0.57 $1.75 $5.50 $6.50

Mathematics

2 answers:

Tom [10] · Answer 1 · 2022-03-12T02:07:14+03:00

Tom [10]3 years ago

5 0

1.75! Hope this helps! Could I get brainiest if it is right?

snow_tiger [21] · Answer 2 · 2022-03-12T04:22:32+03:00

Answer:

1.75 usd.

Step-by-step explanation:

I made the graphic to guide me. Th formula of the function that represents the problem is:

We choose two pairs, for example (2,3.5) and (4,7) and calculate the slope:

m= $\frac{7-3.5}{4-2}=\frac{3.5}{2}= 1.75.$

And we calculate the equation with the slope and one pair:

(y-7)=1.75(x-4)

y-7=1.75x-7

y=1.75x-7+7

y=1.75x.

Then, for x=1, this is one pen the price (the y value) is

y=1.75(1)=1.75, yu can see also the aproximation of the result with the graphic.