Math Problem Statement

Determine if each graph shows a function with a constant or varying rate of change. Also, analyze the table of side lengths and areas for rugs and interpret the equation y=12x+8 representing the cost of a baby bottle and formula.

Solution

The image you uploaded shows a math test with questions involving graphs, rates of change, and interpreting formulas. Here's a breakdown of the tasks on the sheet:

1. Graphs with Constant or Varying Rate of Change:

  • The first part asks you to determine if each graph shows a function with a constant or varying rate of change.
    • Constant rate of change means the function increases or decreases by the same amount at each interval, typically represented by a straight line.
    • Varying rate of change means the rate of increase or decrease changes at different intervals, often represented by a curve.

2. Ms. Hawks' Rug Areas:

  • A table with side lengths of rugs and their corresponding areas is provided.
  • The question asks you to determine if the function represented by the values in the table shows a linear or nonlinear relationship.
    • A linear function will have a constant rate of change (a straight line when graphed).
    • A nonlinear function will have a varying rate of change.

3. Mrs. Vargas' Baby Bottle and Formula:

  • An equation, y=12x+8y = 12x + 8, models the total cost of a baby bottle and formula, where xx is the number of containers of formula.
    • The question asks for the rate of change and the initial value in this situation.
      • Rate of change refers to how the cost changes as the number of containers of formula changes.
      • Initial value represents the cost when no formula containers are purchased, which would just be the cost of the bottle.

Answering the Questions:

  • Question 5: The graphs show different functions. You’ll identify each graph's rate of change (constant or varying).
  • Question 6: Analyze the table of side lengths and areas. If the side lengths and areas grow in a predictable way (like a consistent multiplier), the relationship is likely linear.
  • Question 7: For the equation y=12x+8y = 12x + 8, the rate of change is 12 (the cost per container of formula), and the initial value is 8 (the cost of the bottle).

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Math Problem Analysis

Mathematical Concepts

Rates of Change
Linear Functions
Nonlinear Functions
Graph Analysis
Algebra

Formulas

y = 12x + 8

Theorems

Linear Function Theorem
Constant Rate of Change

Suitable Grade Level

Grades 7-9