Constant Search

This worksheet asks students to calculate y ÷ x for each ratio table and write the constant of proportionality, k. Each table shows x-values and matching y-values that follow a consistent proportional pattern. Students use the relationship between the two rows to find the constant multiplier that turns x into y. This activity helps students connect ratio tables to the algebraic form y = kx and gives them a clearer understanding of what the constant of proportionality actually means.

For a parent, k is simply the number that connects the two rows. If x = 2 and y = 6, then 6 ÷ 2 = 3, so k = 3. That means y is always 3 times x. The student can check the other columns to make sure the same value appears each time.

Learning Goals

• Calculate y ÷ x: Students determine the ratio between paired values.
• Find the Constant of Proportionality: Learners identify k for each table.
• Connect Tables to y = kx: Students see how a ratio table can be represented by an equation.
• Check Consistency: Learners verify that the same constant works across every column.
• Build Algebra Readiness: Students connect proportional relationships with variable notation.

Parent-Friendly Explanation

Use this routine:

1. Choose one complete x-y pair.
2. Divide y by x.
3. That answer is a possible value of k.
4. Check another pair to make sure the ratio is the same.

For example:

x = 2
y = 6

6 ÷ 2 = 3

So:

k = 3

Check:

12 ÷ 4 = 3
18 ÷ 6 = 3

The constant stays the same.

Why This Worksheet Helps

• Makes k Concrete: Students see that the constant comes directly from the table.
• Connects Ratios and Algebra: The table relationship becomes y = kx.
• Strengthens Division: Learners repeatedly calculate y/x.
• Supports Graphing Later: The constant of proportionality also connects to the steepness of a proportional graph.
• Builds Pattern Recognition: Students learn to identify the multiplier that controls the entire table.

Classroom & Home Use

• Great for Pre-Algebra Practice: This is a natural bridge from ratio tables to equations.
• Helpful for Parents: “Divide y by x” gives a simple, repeatable method.
• Useful for Intervention: Students can check several columns if they are unsure.
• Strong for Review: The worksheet reinforces both ratio tables and proportional constants.
• Good for Homeschooling: Families can extend the tables and predict new y-values using k.

The main value of this worksheet is that it helps students understand that a proportional table is controlled by one constant multiplier. Ratios, division, tables, and algebra all connect through k. For parents, the best reminder is: “Divide y by x, and the repeated answer is the constant of proportionality.”