Math Problem Statement

For each table, determine whether it shows that x and y are proportional. If x and y are proportional, fill in the blank with a number in simplest form.

Solution

Let's examine the tables and check whether xx and yy are proportional.

Table 1:

We check if there is a constant ratio between yy and xx in all pairs.

For each pair: yx=214=17,321=17,535=17,568=7\frac{y}{x} = \frac{2}{14} = \frac{1}{7}, \quad \frac{3}{21} = \frac{1}{7}, \quad \frac{5}{35} = \frac{1}{7}, \quad \frac{56}{8} = 7

The ratios are not constant because yx=7\frac{y}{x} = 7 in the last case, while the others give yx=17\frac{y}{x} = \frac{1}{7}. Therefore, Table 1 is not proportional.

Table 2:

We repeat the process for Table 2:

For each pair: yx=62=3,123=4,255=5,488=6\frac{y}{x} = \frac{6}{2} = 3, \quad \frac{12}{3} = 4, \quad \frac{25}{5} = 5, \quad \frac{48}{8} = 6

Here, the ratios are not constant either. Therefore, Table 2 is not proportional.

In conclusion:

  • Table 1: Not proportional
  • Table 2: Not proportional

Would you like more details on this or have any other questions? Here are some related questions for further exploration:

  1. What defines a proportional relationship between two variables?
  2. How can we calculate the constant of proportionality when it exists?
  3. Can proportionality exist if the relationship is inverse (e.g., y=kxy = \frac{k}{x})?
  4. How does a proportional graph differ from a non-proportional graph?
  5. What are some real-life examples of proportional relationships?

Tip: Always check for a consistent ratio between corresponding values to determine proportionality.

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Math Problem Analysis

Mathematical Concepts

Proportionality
Ratios

Formulas

y = kx where k is the constant of proportionality
Ratio: y/x

Theorems

Proportionality Theorem

Suitable Grade Level

Grades 6-8