Math Problem Statement

Select all the correct answers. Identify all the lines on the graph with unit rates that are less than 2 and greater than the unit rate of the relationship in the table.

x y 7 8 14 16 21 24 line 1 line 2 line 3 line 4 line 5

Solution

To solve this problem, we need to calculate the unit rate of the relationship in the table and compare it to the unit rates of the lines on the graph. The unit rate refers to the slope of a line (the change in yy divided by the change in xx).

Step 1: Find the unit rate from the table

The data in the table shows a linear relationship between xx and yy. To find the unit rate (slope), we calculate the change in yy divided by the change in xx.

Looking at the table, we can see that:

  • When x=7x = 7, y=8y = 8
  • When x=14x = 14, y=16y = 16
  • When x=21x = 21, y=24y = 24

The slope (unit rate) is calculated as: slope=change in ychange in x=168147=87\text{slope} = \frac{\text{change in } y}{\text{change in } x} = \frac{16 - 8}{14 - 7} = \frac{8}{7} So, the unit rate is 871.14\frac{8}{7} \approx 1.14.

Step 2: Compare with the lines on the graph

Now we need to check which lines on the graph have unit rates that are:

  • Greater than 1.141.14 (the unit rate from the table).
  • Less than 2.

Since we do not have the explicit equations of the lines, you can calculate the slopes of the lines on the graph by picking two points for each line and applying the same formula for slope: slope=change in ychange in x\text{slope} = \frac{\text{change in } y}{\text{change in } x} Then, select the lines whose slopes are greater than 1.14 but less than 2.

If you have specific data points for the lines or a graph available, feel free to share them so we can proceed with calculating their slopes.

Would you like more details on how to calculate the slopes of each line? Also, here are some follow-up questions:

  1. How do you interpret a unit rate in the context of a linear relationship?
  2. What is the significance of comparing unit rates between different lines?
  3. How can you determine if a relationship is proportional by looking at a graph?
  4. What would a unit rate of 1 indicate about the relationship between xx and yy?
  5. How do changes in the slope affect the steepness of a line on the graph?

Tip: Always use two distinct points on a line to accurately calculate the slope.

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Math Problem Analysis

Mathematical Concepts

Linear Relationships
Unit Rate
Slope
Graphs

Formulas

Slope formula: (change in y) / (change in x)

Theorems

Linear Equation Slope Theorem

Suitable Grade Level

Grades 6-8