Math Problem Statement
Дай ответ
Solution
To determine which graph represents the function , we analyze the following key components of the equation:
- Slope: The coefficient of , which is , represents the slope of the line. This means the line decreases as increases.
- Y-intercept: The constant indicates the point where the line intersects the -axis (at ).
Step-by-Step Analysis of the Graphs
-
Graph A:
The slope is negative, and the line intersects the -axis below . It appears to have a -intercept of . This matches our equation. -
Graph B:
The line has a positive slope, which does not match . Not correct. -
Graph C:
The line has a negative slope but a positive -intercept (above ). Not correct. -
Graph D:
The line also has a negative slope, but the -intercept is positive . 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:
- What is the general equation of a straight line?
- How do you determine the slope of a line from its graph?
- What does a positive vs. negative slope mean for the line's direction?
- How can you find the -intercept of a line visually?
- 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 .
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