page 16 of 16

2 of 32 of 3 Items

Question
The constant of proportionality is the amount a relationship will change for each unit.

It is represented by the value of this ratio: k=yx

One of the ways a proportional relationship is identified is with a graph.

Notice the graph will show a straight line that extends through the origin. The ratio of each point is equivalent.

Point A: (12, 4) k=yx=412=13

Point B: (24, 8) k=yx=824=13

Point C: (36, 12) k=yx=1236=13

The constant of proportionality for this relationship is 13
download per web visit.

The point that represents the constant of proportionality is (1, 13
).

(8 points)
Determine the constant of proportionality for each graph and the point that represents the constant of proportionality.

The constant of proportionality is
eggs used per batch of cookies. and the point that represents the constant of proportionality is (
).

================================



The constant of proportionality is $
per peach and the point that represents the constant of proportionality is (
). **Enter your answer as decimal.**

================================

The constant of proportionality is
markers per package and the point that represents the constant of proportionality is (
).

================================

The constant of proportionality is
blue beads per red bead and the point that represents the constant of proportionality is (
). **Enter your answer as a fraction.**

Skip to navigation

Formula keypad has been closed. Press Control + Backslash to open it again.

1 answer

To determine the constant of proportionality for each scenario and the corresponding point, we need to analyze the relationships described.

  1. Eggs used per batch of cookies:

    • Let's assume the relationship is linear, meaning that the number of eggs increases uniformly with the number of batches of cookies.
    • If we have the ratio of eggs (y) to batches (x), we can express this as \( k = \frac{y}{x} \).
    • For instance, if for 1 batch (x = 1), 2 eggs (y = 2) are used, \( k = \frac{2}{1} = 2 \). Therefore, the constant of proportionality is 2 eggs per batch and the point representing this relationship is (1, 2).
  2. Per peach:

    • If the cost per peach is a fixed ratio, for example, $3 for 1 peach, we can express this as \( k = \frac{y}{x} \) where \( y \) is the total cost and \( x \) is the number of peaches.
    • In this case, when \( x = 1 \) (for one peach), \( y = 3 \). Thus, the constant of proportionality is 3 per peach and the point that represents this constant is (1, 3).
  3. Markers per package:

    • Assuming each package contains a fixed number of markers, such as 10 markers per package, we can set \( k = \frac{y}{x} \).
    • If \( x = 1 \) (one package), then \( y = 10 \). Thus, the constant of proportionality is 10 markers per package and the point representing this relationship is (1, 10).
  4. Blue beads per red bead:

    • If there are, for example, ½ blue beads for every red bead (indicating a ratio), we could use this example to illustrate the point.
    • Therefore, if \( x = 1 \) (one red bead), \( y = ½ \). The constant of proportionality would be \(\frac{1}{2}\), and the point representing this relationship is (1, ½).

In summary:

  • Eggs used per batch: 2 (1, 2)
  • Per peach: 3 (1, 3)
  • Markers per package: 10 (1, 10)
  • Blue beads per red bead: \(\frac{1}{2}\) (1, \(\frac{1}{2}\))