Question

A proportional relationship between the number of pounds of potatoes (x) and the price in dollars (y) is graphed, and the ordered pair (4, 3) is on the graphed line.

Part A: What is the price of 1 pound of potatoes? Show your work, including the proportion you used to determine the price. (8 points)
Part B: What does the ordered pair (8, 6) on the graph represent? Explain in words. (2 points)

Answer 1

@Michele_Laino

Answer 2

@Michele_Laino

Answer 3

the unit price is given by the subsequent ratio:
3/4 =...?

Answer 4

part B:
6 is the price for 8 pounds of potatoes

Answer 5

Ok but @Michele_Laino. It say i have to show my work and the proportion i used to determine the price

Answer 6

part A. I call with p the price of 1 pound of potatoes, so I can write this proportion:
\[\Large 3:4 = p:1\]

Answer 7

Im talking about in words @Michele_Laino

Answer 8

@Michele_Laino

Answer 9

here is my answer:
"three over four is equals to p over one"

Answer 10

@nuccioreggie

Answer 11

O ok and what is B @Michele_Laino

Answer 12

???

Answer 13

Part B:
"6 is the price of 8 pounds of potatoes"

Answer 14

How did we get that / know that

Answer 15

@Michele_Laino. In part A how did you come up with that answer

Answer 16

since if 4 pounds cost $3 than 1 pound costs p, namely those ratios
4/3 and 1/p have to be equal each other:
\[\frac{4}{3} = \frac{1}{p}\]

Answer 17

or, taking the inverse of those ratios, we can write:
\[\frac{3}{4} = \frac{p}{1}\]

Answer 18

Ok thank you i have 3 more ok