Math Problem Statement

Zeichne den Graphen der linearen Funktion. Beschreibe das Monotonieverhalten.

Solution

The image you uploaded contains a mathematical problem involving linear functions. The task is to draw the graph of each function and describe its monotonicity. Let me break down the functions provided and analyze their monotonicity:

a) f(x)=1.5x+0.5f(x) = 1.5x + 0.5

  • Monotonicity: Since the coefficient of xx is positive (1.5), this function is increasing. As xx increases, f(x)f(x) also increases.

b) f(x)=34x2f(x) = \frac{3}{4}x - 2

  • Monotonicity: The coefficient of xx is positive (34\frac{3}{4}), so the function is also increasing. As xx increases, f(x)f(x) increases.

c) f(x)=53xf(x) = 5 - 3x

  • Monotonicity: The coefficient of xx is negative (-3), so this function is decreasing. As xx increases, f(x)f(x) decreases.

d) f(x)=1.5x0.5f(x) = -1.5x - 0.5

  • Monotonicity: The coefficient of xx is negative (-1.5), indicating that this function is decreasing. As xx increases, f(x)f(x) decreases.

e) f(x)=43x+2f(x) = -\frac{4}{3}x + 2

  • Monotonicity: The coefficient of xx is negative 43-\frac{4}{3}, so this function is decreasing. As xx increases, f(x)f(x) decreases.

f) f(x)=2+2xf(x) = -2 + 2x

  • Monotonicity: The coefficient of xx is positive (2), so this function is increasing. As xx increases, f(x)f(x) also increases.

Summary of monotonicity:

  • Increasing: a), b), f)
  • Decreasing: c), d), e)

Would you like to see a graphical representation of these functions or further explanations on how to plot them? Feel free to ask for any additional details.

5 Related Questions:

  1. How do you calculate the slope of a linear function from its equation?
  2. What is the significance of the y-intercept in the graph of a linear function?
  3. How can you quickly determine if a linear function is increasing or decreasing just by looking at its equation?
  4. How do you sketch the graph of a linear function by using two points?
  5. What is the general form of a linear function, and how do you recognize it?

Tip: The slope of a linear function indicates its rate of change—if the slope is positive, the function increases, and if it's negative, the function decreases.

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Math Problem Analysis

Mathematical Concepts

Linear Functions
Monotonicity
Graphing Functions

Formulas

f(x) = mx + b

Theorems

Monotonicity of linear functions

Suitable Grade Level

Grades 9-11