Math Problem Statement

Дай ответ

Noteikt, kurā zīmējumā dots funkcijas y = -0.5x - 2 grafiks.

Solution

To determine which graph represents the function y=0.5x2y = -0.5x - 2, we analyze the following key components of the equation:

  1. Slope: The coefficient of xx, which is 0.5-0.5, represents the slope of the line. This means the line decreases as xx increases.
  2. Y-intercept: The constant 2-2 indicates the point where the line intersects the yy-axis (at y=2y = -2).

Step-by-Step Analysis of the Graphs

  • Graph A:
    The slope is negative, and the line intersects the yy-axis below 00. It appears to have a yy-intercept of 2-2. This matches our equation.

  • Graph B:
    The line has a positive slope, which does not match 0.5-0.5. Not correct.

  • Graph C:
    The line has a negative slope but a positive yy-intercept (above 00). Not correct.

  • Graph D:
    The line also has a negative slope, but the yy-intercept is positive 22. Not correct.

Final Answer:

The correct graph is A.


Do you need further clarification or a breakdown of the solution?
Here are 5 related questions you can explore:

  1. What is the general equation of a straight line?
  2. How do you determine the slope of a line from its graph?
  3. What does a positive vs. negative slope mean for the line's direction?
  4. How can you find the yy-intercept of a line visually?
  5. How do you rewrite a line equation in slope-intercept form?

Tip: To verify the slope on a graph, pick two points on the line and use the slope formula m=ΔyΔxm = \frac{\Delta y}{\Delta x}.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Linear Equations
Slope-Intercept Form
Graphing Lines

Formulas

y = mx + b (Slope-Intercept Form)
m = Δy / Δx (Slope Formula)

Theorems

Linear Equation Representation

Suitable Grade Level

Grades 8-10